The Outbreak Part 2

Story by Mahiri Morahan on SoFurry

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#246 of Commissions

Commission for SnowCheetah!

There are only two cats left in the rat den. Snow and Mahiri stumble nakedly through the dark, looking for any means of escape as the swarm of plague rats pursues them. That contagious, lustful virus needs more carriers, and the mad rat doctor won't stop until she has claimed them.

Part one here: https://www.sofurry.com/view/1747542

Contains: Plague-play, horror themes, gangbang, noncon, musk, twincest, species transformation, cock vore, and more!


Hearts thumped. Heads spun. Their breath didn't come easy. They needed to steady themselves. They needed to escape. The time to consider all the terrible things that had happened to their friends would be later, once they were free from the nightmare. Snow and Mahiri hobbled along together, mutually exhausted. They needed a moment to recover, even knowing that the pursuing hordes could have been right on their tails. All was ominously silent while the gasped for air in what looked like an old cafeteria. The only flicker of hope in the dark old prison shone there above a door.

"Is that - huff ... " the cheetah began, but was too breathless to finish.

Mahiri knew what he was thinking. She nodded, still catching her breath herself. "It could be ... a way out."

Of course it was locked. Snow whimpered with disappointment when he pressed his weight into it and it didn't budge. Mahiri yelped in pain when she threw her shoulder right against it and found that was useless too. They were both far too tired to keep running, at least for the moment. Cats were built for bursts, not for stamina. At least when it came to running. They were going to have to find a key, but not just any key. The door was fitted with what had to be a custom-made lock, a great big boxy contraption with a sizable entryway for what looked like an old-fashioned skeleton key. Mahiri's picking skills weren't going to get her through that one. Neither was a crowbar, even if they found one.

Once they had regained enough stamina to walk, they ventured out to inspect their surroundings further. There still were no sounds of pursuit. It seemed far too easy. They crept along together, keeping close, nearly hip to hip just in case something grabbed one of them from the shadows. Neither of them made a sound with their full feline stealth on display. Eventually they came across a guard post that still had a light on. The door was slightly open. That was conspicuous enough on its own, but the scent of rat was absent from within. Mahiri poked her face in and just got a noseful of dust for her efforts. Seemed that room had gone untouched for a while.

It was a little warmer in there too. The empty facility was chilly when they didn't have a shred of clothing to cover their spots. They huddled there beneath the bare, buzzing lightbulb and considered everything they could find. It was mostly stripped bare, but there were two things of note for them. One was an old map posted on a board on the wall. The other was a pair of old, clunky two-way radios. They had the same thought and took one each, fiddling with the buttons until they figured out how to turn them on. A red light indicated they still had working batteries, and a press of the largest button produced a little blip from each of them. The cheetah leaned close to the receiver.

"Testing," Snow softly said.

His voice crackled out of the one Mahiri held. It was broken up, but audible. Good enough for them to send an emergency message, if they needed. Such a find was fortuitous given the task laid out before them. They needed to find the key, but there were so many places to look for it. A study of the blueprint hanging lopsided on the wall gave them two prominent options. Maybe it was in the place marked 'security control'. Or maybe it was in the warden's office. The problem was, those two places were on complete opposite ends of the building. Either they checked one, and then doubled back for the other, or they tried to maximize the chance that at least one of them made it out of there without the rats catching them. They exchanged a look and hesitantly started to say what they were both thinking.

"Should we take one each?" Snow softly asked.

Mahiri gave a nod. "When one of us finds it, we can radio the other. Then we can both get out of here together."

Of course, they'd both seen movies. They knew that splitting up always led to horrible consequences in fiction, but this was different. If the hordes were onto their scents, they would have to divide their attention in two different directions. And maybe, just maybe, Mahiri wasn't just speaking in platitudes. They still hadn't been caught. A pang of fear and guilt alike made Snow slump his shoulders and tense his spine whenever he thought about his captured friends, but he knew there was no saving them anymore. As for what exactly happened to them, he wasn't sure. It couldn't have been good.. He gritted his teeth, shook his head, and resolved to keep going, no matter how scared he might have been. For Rio, for Ashala.

"Which one do you want? Security or warden?" Mahiri's question broke him from his silent contemplation of the path ahead.

"Um. It doesn't matter." He glanced back and forth from one room to the other on the map. Neither of them seemed easy to reach. "Let's say ... the warden's office. Looks like it's a straighter path, and if I have to run ..."

Mahiri nodded. She knew he was the faster of the two of them, and she the stealthier. "Just try to stay hidden. There's no way we can fight that many."

She was just about to turn to depart, but a hand on her shoulder kept her there. Snow squeezed. His voice got very soft.

"What if we see ... the others?"

Mahiri knew what he meant. Though unaware of their specific fates, she could only assume they'd ended up just like the lynx they saw on video. Two new rats for the horde, searching for them. Though the truth was that only one of their former friends was in ravenous, plague-lusted pursuit of their naked bodies, that knowledge certainly wouldn't have been a comfort. She gave a solemn nod.

"Don't let it distract you. Stay hidden."

She emphasized that with the slightest of growls, just in case it wasn't clear enough. Snow nodded and didn't say another word. Whether it would be the last time they saw each other, in their current forms at least, they didn't know. They were just going to have to focus on escape before all else, and hope the world beyond the prison was still functioning, still untainted by that virulent strain that lived within the musky horde. She carried on in silence, radio in hand, crouched low and keeping to the shadows. Those glimmering, toxic gazes could have been anywhere. She scanned for the smallest signs of green, but found only empty corridors while she crept from room to room, hoping the cheetah was making just as good progress.

A glance down the radio in her hand had her considering whether she should call to check in on Snow. Before she could consider that for long, she found herself scrambling to a hiding spot when she heard skittering ahead. The sound of scraping claws on cold concrete had her heart pounding while she huddled behind an overturned table in what seemed like some sort of meeting room. Being out of the grimmer prisoner's side of the facility didn't make the place feel any less threatening - and no matter how far she went, she couldn't find a single way out. That door, and its custom-made key was their only hope.

Eventually, she was going to have to move, even while she sensed subtle movements of her creeping hunters all around. They hadn't seen her, they hadn't heard her. But that wasn't good enough. Her heart sank into her bare toes when she heard the distant sound of several rodent snouts deeply sniffing the air. They were getting closer.

It didn't sound like many. Either she got up and made a run for it, or she waited, and hoped. Hoped for what? They were honing in on her, sniffing her out by the scent of an intruder. Felines didn't belong there. She stood out even in the dark. Clutching that radio tight to her chest, she waited until she could hear their footsteps scraping right up to the door - and then they kept going. She didn't breathe her relief just yet.

That only came when the sniffing turned instead into a horny squeaking and moaning as the search party descended into a threesome. All that huffing meant they caught each other's musk more than Mahiri's scent, and that plaguelust was a powerful force. Enough so that even as she poked her head out into the wall to peer at the writhing bodies nearby, they didn't pay her any mind. She snuck off, finally allowing herself to exhale again.

The rest was quiet. She wished she could have taken the map with her, but that would have meant tearing down the whole bulletin board and snapping it in half. At least she mostly remembered the way. She was no longer in the abandoned section. Now she was seeing the remodelling and repurposing efforts at work. There were lights, lab equipment, and plenty of monitors displaying one piece of information or another. Large flasks of green fluid sometimes seemed to contain a murky, moving figure. Bigger storage tanks seemed occupied too. She didn't take a closer look. Just being naked around so many potentially hazardous substances and experiments was already enough to make her skin crawl a little, as if worrying she might absorb something out of the air.

Eventually, she found the place. Some blinking lights and screens of security footage told her she was in the right spot. She didn't see the key anywhere. Or at least, she didn't see it in the room. Scanning through the various video screens, she saw rats prowling the halls, saw some sort of strange experiments in progress on some other bound, captive feline subjects somewhere, and then she saw it.

One of the cameras was pointing directly at the hanging key, that custom-made, oversized thing. It was like someone had framed the shot to highlight it perfectly. As suspicious as that was, she couldn't think of a better solution. A label atop that monitor said Warden's Office. That was the opposite side of the prison from her, ensuring it all relied on Snow. She lifted up her radio and got ready to tell him of her findings.

Things weren't going as well for him. Mahiri's side was largely unguarded entirely because it was the wrong way to go. Snow wished he was as stealth as the leopardess as he crawled through rubble, or jammed himself into tiny vents just to avoid the patrolling hordes. They were going to hear him, or maybe smell him. Maybe he was just going to bump into them, for how numerous they were, squeaking and chattering in the dark, not to mention screaming and moaning in pleasure as they forgot their duties in favour of indulging their urges.

The sounds were enough to distract him a little, but it was the scents that really got to him. The wafting cloud of pure rat musk made him start to wonder if getting caught was really as bad as he feared. His body reacted a little while he shimmied his way through a narrow tunnel between two old, collapsed walls. A slight twitch of his sheath made him glance downwards, almost missing the patrol coming right his way.

He held his breath. Not just to avoid being detected, but to keep from breathing in the cloud of tempting rat essence that came with the approach of five horny rats, moving as a group. He saw the glistening juices clinging to their cocks and fur alike. He heard them gnashing their teeth with lust. They would have been all over him in seconds if he made a single sound, but he was thankfully hidden behind one of the collapsed sections where they didn't think to check. All he had to do was wait - or that was what he thought, right up to the moment the crackling voice of the leopard came from the speaker of the radio he kept clutched to his chest.

"Snow? Do you read?"

The cheetah scrambled to shut it off, but it was already too late. Instead, he dropped it to the floor with a heavy clunk and heard a screech of excitement emanating from the patrol, seemingly in unison. They were one mind, one desire, and they were all looking at him as he came staggering out of his hiding spot. The only thing that saved him was their clumsy approach. They tripped over each other in their haste to be the first to pounce him.

They were drooling, dripping, throbbing as they crawled over one another and lunged for him just as he turned tail to run. A grasping hand caught a small lock of his hair and claimed it for the rats while he got away otherwise unscathed. That was time for a cheetah's speed to serve him. He sprinted as fast as he possibly could towards the door to the warden's office and flung himself behind, slamming it behind him.

A simple lock wasn't going to hold forever. In his panic, he felt surprisingly clear-minded. He knew to make a barricade, and he quickly spotted what he needed to use. Shoving a desk and chair in the way of the door was enough to leave them banging on it to no avail, but he still followed up with a shelf full of books too. Pushing that across the room required all of the strength in his lean body, with his shoulder pressed right up to the side as he strained, but he got there. It would hold, for a while.

He stood panting and listening to the thud thud thud against the door while the hordes screamed and clawed at the wall, furious with lust for the untainted cheetah. Their scent still swam through his senses, but he couldn't let it distract him for any longer. He had to find the key. That was easy enough when it was hanging in plain sight, but that was as far as his plans went.

When the adrenaline faded, he was left only with the fear. He cowered away from the crashing, cracking door as the rats slowly broke through the barrier and gnashed their teeth in gaps they created. He was trapped. There was only one way in or out, and it was through a sea of contaminated bodies. One bite, one scratch - to say nothing of all the other things the horny swarm was likely to do to him - and he would have been infected like the others. He looked down at the status on his irremovable bracelet. It was still blue. He hadn't contracted anything on the way there, at least.

Mahiri watched it all unfolding on the live feed of security footage. She frantically searched through the controls to see if there might be something she could do to help. Maybe there was a secret exit she could open up if she pressed the right keys, but mashing buttons at random didn't seem like a good idea. Part of her thought she should have been focusing on getting her own room barricaded lest she get ambushed at any moment. She'd locked the only door behind her, but that was the extent of it. When she looked to the side and watched a hallway cam, she saw a particularly large, lumbering figure, a monster of a rat rippling with muscle and heft alike. The way his fur grew thick and tufted around his head and neck almost made it look like he had a mane.

It took just a single blow from that mighty rat-beast's shoulder to shatter the cheetah's barricade and send debris flying all across the room. Snow turned away and felt pieces of that smashed furniture and door alike hit him in the back, thankfully not doing any damage. He was surprised at how long it took that monstrous former lion to actually pounce him. Or maybe that was just his perception of time, frozen in the moment, leaving him knowing he was utterly doomed. He waited for the impact that was sure to come.

No amount of bracing himself could possibly prepare him for getting shoved down flat beneath the bulk of the massive, muscular creature that used to be his friend. Snow recognized a certain something behind the green glint of those plaguebearer eyes. That was Rio pinning him down, snarling, drooling, gnashing those long rat teeth right in his face. The lion had been a good carrier, and he was about to make the cheetah one too.

Snow didn't think there was any sense reasoning with him. That wasn't his friend anymore, that was a monster, twisted by the vile substance in his veins. One bite, one scratch, that would have been enough to convert Snow too. He scrambled and fought with all he had. When he got his legs up, he delivered some solid kicks to the hulking rat's midsection. His paws glanced off that tawny fur and muscle without slowing the attack any. It didn't take long for Rio to get the cheetah pinned. Snow grunted as he felt all that weight coming down on him to keep him from thrashing around, and once he had two huge hands wrapped around his wrists, his arms weren't going anywhere. The only thing he had left was to wriggle his hips back and forth in one last desperate attempt to slip free of that mighty grasp. None of it kept the rat from grinding that thick, plague-bearing dick all over him.

It was bigger than it had been when Rio was a lion. That fat shaft smeared blighted juices all over Snow's belly while he mewled and shook his head. The other rats showed surprising restraint while they let the beastly new recruit do his thing. Though plenty of them were hard, dripping, ready to pounce as soon as the cheetah became one of them. A slow slide of thick rat cock between Snow's thighs brought him closer and closer to getting dosed with that contagion, though he managed to wiggle that spotty ass enough to make it hard for the brute to line himself up with his victim. Rio gave a frustrated gnash of his teeth while he fought to get his dick inside the cat, only to slip off along one of those spotty cheeks again and again. There were juices drizzled all over Snow's fur, soaking him in the thick scent of plague rat lust. It was enough to make his eyes water.

Eventually, that bestial mind figured it out. All Rio had to do was grab Snow by the shoulders and roughly flip him over so he was face down on the carpet of that old room. Mahiri could see it all on the cameras, but the cheetah's form was largely concealed by the huge rat's bulk. Rio mounted him from behind, clutching his hands behind his back and tugging his tail straight up at the same time. Snow didn't manage much more than a mewl as he felt those damning juices streak across his rim.

An arch of his back, a twitch of his tail, and a sharp cry from his lips didn't do much to stop the horny beast as Rio shoved that fattened dick between two spotty cheeks and took that cat just like a soft, fuckable girl. Snow kept on struggling, even if it meant exhausting his every muscle to the point of aching while he got penetrated by that enormous plaguebearer, shoved full of dangerous cock. The first blip of his monitoring device told him the leaking juices oozing from that slathered tip were already enough to start the first stage of infection.

From there it was all chirps, yelps, and deep, satisfied groans as the rat monster sunk his dick straight into Snow's cushy rump. He bottomed out and left the cheetah with a pair of thick nuts pressed against his own much more modest set. The rat's balls flexed and churned with the engorging load pumping through them. He was ready to fill the cheetah up with tainted spunk after a single thrust, but he didn't stop there. The pleasure of spreading the plague was one he took his time with, much to Snow's relief. He expected a brutal, back-breaking force-fuck but instead he got a steady, deep thumping that was actually bearable, even enjoyable. Or maybe that was the early stages of the affliction talking, swirling through his mind and making him live for pleasure rather than self-preservation. And a fat rat cock in his tight butt.

There were still a few familiar lion growls under the lusty squeaks of the ratbeast's voice. He grunted as he fucked that spotty ass hard, but at least he sped up gradually. From a steady plap to a rising THUD of muscular body devastating Snow's softer, more feminine form, he turned it into a brutal courtship the longer he spent buried beneath the cheetah's wrenched up tail. Snow's lip trembled a little, but not with fear or anguish. It was more the struggle against moaning out loud, especially with all those horny rats watching his every move.

They snickered and they scraped, stroking their dripping cocks while they waited their turn with that shapely booty. Snow's wrist device made another beep, but he couldn't see it with his hands held back like that. He was just going to have to endure, to let that rat-hulk have his way with him, and see what happened to his body when those bouncing balls let loose their pent-up plague-load.

He was getting hard from it. It was impossible to resist when he was getting pleasure hammered into his rump again and again by the heaving muscles of the drooling rat atop him. His sheath filled out and then he felt his cock slipping free against his belly, pinned beneath him and the floor. It throbbed its way to full while he got hammered from behind with lunging thrusts that smacked against his butt with nearly the full force the former lion could muster. He was buried beneath that sweaty, muscular form, squished by solid pecs and abs alike. The solid wall of Rio's muscles didn't give a single hint to the tigress he'd claimed in a fit of ravenous hunger. If Snow only knew what had happened to the other cat who hadn't proved to be a proper carrier, he would have been a lot more concerned about what his bracelet was showing.

It had gone from blue to yellow. The more and more the rodent rutted him, the more the virus took hold. He was feeling a little numb, yet always tingled when he got another spurt of juices inside him. It was doing its work, crawling through his nerves, igniting all sorts of strange sensations along his entire body. His skin crawled, but in an oddly pleasant way. He closed his eyes and slumped down, far too tired to keep struggling. All he could do was faintly clench in the cock stuffed deep inside him, slowly kneading around Rio's solid inches to help drive the transformed plaguebeast to orgasm. Snow could feel it brewing, could feel those heavy nuts flexing harder, tighter against his sore rumpcheeks while he got fucked silly. It was enough to make him almost forget the danger of letting that highly contagious monster cum inside him.

The splurch was loud enough to echo. The cheetah wailed out as he felt that rush of blazing hot rat jizz shoot right up into his belly. He was swollen in moments, sloshed full of tainted spunk, nearly sizzled with the heat of all that cream pumping straight under his tail. All he could do was faintly squirt his own comparatively tiny cumshot all over himself. It was still enough to paint his growing gut, and even to splash himself in the face as he panted and faintly groaned, lost in the haze of getting turned into a plague rat condom.

It squirted out from around that thick rat cock, gushed across the entire room where it didn't just paint the dull fur of the beast atop him. He was drooling a little cum from the corners of his mouth by the time Rio was done emptying his balls inside that girly butt. There was simply nowhere for it all to go. He was a puddle of broken, defeated feline, and the only thing that kept him from passing out was the shrill sound coming from his wrist. The device played him a mournful tune.

As the hulking beast pulled from his rump and left him flooded, pouring excess cream from his stretched hole, he got his first glimpse at the screen of his device. It flashed red. He looked at it, then scanned the crowd around him. They were slavering, shaking their heads, murmuring something he couldn't hear. His body was ablaze with new feelings, but he was still very much a cat. The rats closed in, teeth clacking, claws scraping, a hungering look in every one of their glowing eyes.

They lashed their naked tails and beat them against the floor like marching drums as the weakened cheetah slowly dragged himself away and against the wall. He could barely feel his legs. His eyes were wide, but any fear he felt was swiftly eroded by the virus in his blood. In place there came a rush of lust so potent he nearly blew a second load with the force of his sudden throb.

"Failure," came the damning snarl of a drooling rat.

"Worthless," condemned another, still stroking his cock, pulling the extra skin back and forth over the pre-soaked tip.

"Just a rag for rat spunk." The third one outright spat at him once he spoke.

"A toy to use and discard."

They came closer, closer, surrounding him, backing him to that wall. And for all their degrading taunts, for all their apparent disdain they had for him, he only got more turned on. It was like they knew exactly what they wanted to hear. His mind fell apart piece by piece, leaving nothing but his fixation on those schlicking cocks as the swarm masturbated in his face. He huffed deep of plaguescent and swallowed the corruption into his lungs. He pulsed, he spurted, he dripped. There was nothing more he wanted than to be used for the pleasure of the horde around them. He wanted their musk, their rich rat taste, and more than anything he wanted to slosh with their contaminated seed and be a vessel for the evil thing that lived inside them - even if he'd proven to be an inferior host.

He soon got his wish. Rushing forth like liquid from an overturned glass, they swarmed him and took him down to the floor. He found himself bent over in the clutches of at least a dozen rats. Their bodies all swam together in the steamy haze of overpowering musk. His every sense was clouded, but he felt their every touch. A cock in his mouth soon pushed deep into his throat, but he never gagged. The corruption in his mind ensured he was desperate to be their perfect little plagueslut. Every thrust, every plunge, every grind of cock across his fur was its own reward. He got mounted, penetrated, and rubbed all over. They painted him like a canvas, grinding their juicy dicks on his spots, slathering him up in the steaming hot juices that flowed thick from every cock around him. He was drenched, soaking it all up like a sponge, a rag whose soft fur brought them pleasure as the fucked and humped him in frantic, pounding strokes.

There came the laughter, the screaming, the roaring madness echoing through the horde as they claimed the failed experiment for their own. All that accumulated plaguelust fuelled them into a frenzy of ferocious mating, as if trying to breed every hole the cheetah had at once. He swallowed a load of fresh cum and barely got plenty sprayed all over his pretty kitty face. His gut just sagged lower and lower as one rat blew a load in his ass and then another took that place, jiggling him with the force of that manic pounding.

He came all over the floor for them, again and again. It wasn't even a matter of the pleasure they gave him while they buried themselves balls deep in his spotty rear. Simply sweltering with them in the depraved cocktail of powerful rat musk, swimming in their scent, their sweat, their liquid lust painted all over his body kept him at a peak. Even once he emptied his cute balls for them, he still had more for them. His mind was blank but for the eternal desire for nasty, musky, drooling rats.

Getting spitroasted by half a dozen of them on each end was enough to leave him absolutely bloated, but they still had more to take from him. He found himself down on his back again, roughly shoved off balance and collapsing. They didn't even give him a moment to catch his breath before they pounced. His vision was already so blurred it hardly seemed any darker when he got smothered in rat ass. One of the males took a firm seat on his face and pressed that sweaty rim right up against his lips. He obliged with his tingly tongue, licking that hole a few times before he dived in to start eating sweaty rat ass wet and deep. His moans got muffled beneath that pink tail while one of the girlier members of the horde sat his curvy rump down on the cheetah's dick and buried it inside himself in an instant. Finally, all that spunk Snow was shooting everywhere had a place to go.

He got milked in nothing more than a few bounces of that girly rat rump on his dick. Powerbottoming hardly began to describe it. He came for that curvy one and his reward was to get another ride, and another. A pointy snout wiggled in between his thighs while he got smothered and sat on. He felt a tongue working over his splattered hole while he rimmed the thick rat atop him. A grinding press on his face from that sweaty rump ensured he got his tongue buried extra deep while he curled it and pleasured that musky creature for as long as he wanted to use him like a throne.

It was already hard enough to breathe when his tongue wasn't buried in rat taint, but he didn't care. His balls flexed and pumped, shooting yet more for the one on his dick until that girly powerbottom blew his own load with a clenching grip around Snow's every inch. He was still cumming by the time the girly rat pulled off him, and the next one caught it in his mouth as he guzzled his way down to the base of the cheetah's cock to suck it dry.

There was no part of him that wasn't covered in rat cum. He took their every load, sucked their cocks, ate their asses, and they went back to fucking him over and over again soon after. He was broken so deeply it was probably permanent, and yet he never seemed satisfied. He loved the way they smelled. Their taste was like a dream to him. Their fur, their tongues, their every single feature made his mind swim with pleasure just to be around them. The virus had rewritten him, broken him into nothing more than a dumb, drooling rat slut. Though it didn't give him unlimited stamina, as much as he tried to act like it did.

There came a time when he started to fade, started to slump and collapse after satisfying the desires of at least twenty or thirty dirty rodents. He wore Victoria's gift like a second skin. It filled his belly, it leaked from his rump, it clung to his tongue and invaded his senses. Yet he was still nothing more than a horny cat for the swarm to enjoy, not the success the plaguemistress had wanted.

Mahiri hadn't made any progress in the meantime. She'd been trying to figure out the archaic control panel before her in hopes of opening an escape route somewhere, but that was close to impossible when nothing was labelled. Even hitting buttons at random didn't seem to do anything. It seemed to want specific patterns, giving an error code when she pressed anything out of order. Worse, she was distracted the whole time, her memory of the patterns she'd discovered fading as soon as she found them. It was impossible to keep from getting caught up in the exhibition going on before her eyes.

The security system was surprisingly high definition. She caught every detail, even heard the squelches of gushing rat cum. Some part of her already knew it was over. She'd never get to the key. There was no escape from the horde that hunted her. And she had to admit - it didn't look like the worst of fates. Yet when she heard that polite knock on the locked door to the security controls, she whirled around and prepared herself to brace against the entrance and keep the infected intruders out. Her preservation instinct suddenly awoke once more, and left her ready to fight to her last ounce of energy. The voice wasn't what she expected.

"Mahiri, love." It was the leader of them all, the mad doctor herself. "Do be a dear and open this door. I have a limited sample size of leopards, but you have all thus far proven to be excellent subjects."

The leopardess scrambled in a frantic search for something that might help her defend herself. The room was barren. She was just going to have to hope that lock held. And that Victoria didn't have a key.

"You wouldn't be alone in my swarm, you know. I'm sure Mira would love to have you join us."

Mahiri paused amid the panic and stared at the door. Had her twin sister already fallen to the horde? The carefree pantheress hardly seemed the sort to get wrapped up in some sort of evil science experiment, but perhaps she'd been a captive just like Mahiri. The leopard just shook her head as if to dislodge the thought from her mind.

"That's not true. You're just trying to get me out of here."

"I assure you I am not lying. Though I hardly expect you to take my word without proof. I am a woman of science, after all."

A very faint sound of scraping above her caught Mahiri's attention for a moment. She didn't take her eyes off the door for long, simply awaiting the rat doc's next words.

"When you are ready, Mira."

Mahiri didn't even hear her coming. The pantheress hadn't lost her stealthy ways in her conversion to dark, green-eyed plague rat. It was only by the faint huff of familiar scent that Mahiri knew she was there. Then there came the warmth of a wet tongue swiping along her neck, and then the harsh grip of rodent teeth locking onto her scruff. The black rat had dropped down from the ceiling without making a noise, and snuck right up on her sister. Mahiri didn't move at first, even as she got groped from behind. Mira pressed her curves closer to her twin's feline body, took a nibble of her ear, and started to whisper.

"You're going to make such a good rat, Mahiri."

The leopardess gave a sudden jolt and forcefully pried herself from her transformed sister's grasp. She backed up against the door and stared at that shapely rodent. Even with her whole species overwritten by that transformative sickness, it was still unmistakably Mira. Those hips, that dark, silky hair, those plump tits - Mahiri knew her sister when she saw her. She just shook her head.

"Mira, no ... you're being controlled by that ... that maniac. Maybe if we get out of here together, we can find a cure ..."

"Oh, Mahiri. I've been helping her since the very start. Where do you think I vanished off to on my many trips out of town?"

It was true. Mira loved to be a little mysterious, and generally never mentioned when she was going when she dropped out of touch for an extended time. The pantheress took a few steps closer. Mahiri had nowhere to go. She didn't even think of trying to fight her sister, even in her new form.

"That's not true. You must have been captured, brainwashed ...."

"It's sweet that you're worried about me! But relax, sis. It's all going to be alright. I love being a rat. I can feel it inside me. I want to give it to you."

Closer still. Mira moved right up to her twin and found no resistance when she grasped the leopard's hips and tugged her closer. They were both wet. She, from the plaguelust flowing through her veins, and Mahiri from the sight and scent of that shiny black rat offering herself so freely to her. The leopard didn't resist anymore. She took a deep breath of that rich scent and simply murmured with doubt and worry while she accepted the gentle kiss her sister offered. A simple peck of lips to lips was enough to make her device beep. She didn't bother to look. Mira's kiss tasted good. Her body was warm and soft. As if by instinct alone, Mahiri found herself running her fingers over that soft rat fur, embracing her twin as they mashed their cushy curves close together right up against the door while Victoria patiently waited on the other side.

"Ohh ..."

"You see? I already have you, Mahiri. Just enjoy this moment. We only get to have it once."

The leopard closed her eyes and let the former panther kiss her deeper. She felt that tongue sliding into her mouth and lightly sucked it. There was a flash of familiar flavour and something deeper, something more enticing than ever before. She let herself take a double handful of thick rat rump. It had always been a close contest over who had the better butt. She squished deep to massage her twin while Mira sucked on her sister's lips and slowly massaged the inside of her mouth with her tongue. They were moaning together before long. Mahiri rumbled too. She slumped back in bliss, her mouth full of rat drool, and felt the changes slowly coming over her. It hadn't been enough yet. She still needed more. And she wanted it too.

She wasn't sure how she'd ended up on her knees. A little push was all it took. Mira planted both hands atop the leopard's head, stroked those crimson locks, and tugged her twin between her thighs for that forbidden taste. Mahiri knew well what a single slurp meant. The rat-panther had been tainted, corrupted from within by something neither of them fully understood. All she knew was how much it made her want to taste that sleek black rat.

Scent alone was driving her nearly mad. She quivered with the urge running through her, lingered there, kneeling before the busty rodent, breathing that wet perfume. Mira never forced her along. She let the leopardess come to her decision naturally, slowly gravitating to that tempting rat cunt until she simply smothered herself face-first in infectious sex.

A nuzzle, a kiss, and soon Mahiri shared her tongue. A deep, smooth slurp sealed her fate, or so it felt. An electric, briefly numbing sensation spread across her lips, and then she felt it dancing down her throat, all the way to her most tender places. Her tits tingled delightfully simply for licking that rat pussy. The taste was everything she'd ever wanted. It took her mere moments of consideration before she delved in for more.

Clutching, pulling, hungrily slathering, she feasted upon the thing that lived inside her rat-touched twin, slurping and stroke with the full texture of her stimulating tongue. Up and down, back and forth, she went gliding across those folds until she'd swept off every trace of lusty, dangerous juices and replaced them with her saliva. Mira was wet enough after a few good licks that Mahiri had to gulp the excess mess.

She trembled and wavered until her balance faltered. Mira rode her to the floor and took her position atop the leopard's face. The horny rat rode that muzzle while she spread Victoria's creation to her twin, grinding back and forth, painting Mahiri's features in the thickened juices of desire. The leopard plunged deep. She clutched that thick black rump and held on tight while she tongue-fucked that delicious creature. Nothing could stop her from making her sister moan, and she soon got her wish.

Mira's purrs might not have been present anymore, but she could certainly shriek. Even a squeak could sound powerful when it came muffled to Mahiri's ears where she was smothered beneath all those plush curves. Mira rode her while she groped herself, squeezed deep into her rodent shapes, played with her tits, gnashed her gnawing teeth. Soon she couldn't control herself.

A lean forward over the sprawled cat let her get a hand behind Mahiri's head. She positioned herself to buck those rat hips and fuck Mahiri's face with her pussy. Every stroke plunged that tongue deeper, sharing the taste of tainted cunt to the obsessed leopard. Mahiri kept her grip strong, kept herself immersed and desperately indulging in as much of Mira as she possibly could. She made that rat clench and pump around her, she made her moan and cry out as she twitched and twisted atop her face.

Air didn't matter. Nor did showing any sort of restraint in eating out her sister, her own twin no less. She licked that black rat inside and out until she felt the quivering triumph of orgasm rattling through Mira's form. That was no roar that escaped those toothy jaws, but a shrill, sharp rodent cry as the rat arched herself into a gushing climax right into Mahiri's open mouth.

The leopard took it in the face when she didn't just guzzle right from the source. She swallowed those hot juices like it was the sweetest drink she'd ever tasted. Gulp gulp gulp went her wilful acceptance of that horny rat corruption. Mira's squelching orgasm almost drowned out the sound of triumph coming from Mahiri's bracelet. Hearing that little jingle of triumph made Mira moan all the louder. She bucked her hips in Mahiri's face a few more times before finally pulling her quivering pussy away from those drenched features.

The leopard's hair was soaked, matted to the floor around her like a halo as she panted steam up at her rat sister. A glance to the side saw the display of that device reflecting bright, toxic green. Then there came a sudden shudder down her spine as the transformation started.

Mira wasn't done with her yet. She pounced upon the corrupted leopardess and smoothly lined herself up between her twin's thighs. The position wasn't perfect, but they held each other close and firmly rubbed their pussies together. The point was to share their lust with each other, but there was still plenty of pleasure to be had.

Sometimes they caught each other from a tender angle. They mirrored each other's moans. They listened to Mahiri's purrs fading, transforming mid-rumble into something more fittingly ratlike. She felt it in her throat, the warmth that trickled down to her belly and changed her from the inside out. Every moment she spent with the blight inside her was bliss. The sensation of a slick rat sex grinding against her own the whole time certainly helped too.

Victoria's patience never wavered. She stood outside until the recruitment process was done. When all went quiet once more but for the sound of the twins smooching as they embraced each other's newfound forms, she gently knocked once more.

"All finished in there? Do open the door when you can, dears. I would like to meet our newest recruit."

Mira unlocked it to allow the bottomless plague doctor to enter. Victoria was still as masked as ever, though she had her cock standing tall, dripping the purest sample of her creation there was. Mahiri needed it. Right from the source. She was invigorated at the sight of the leatherclad figure. Springing to her knees, she crawled to Victoria like a worshipper, even as her natural patterns started to fade and blend in with duller, less vibrant fur more befitting of the rat she was becoming. She had to suck that cock while she was still a cat. She had to communicate to the rat that she deserved the adoration of every feline she encountered. The doctor was pleased to oblige.

"Such a success," Victoria mused. "Very fine work, Mira. You two shall be my most prized of specimens."

"Thank you, Mistress," the former pantheress said. It was a term given out of respect, not subservience, or brainwashing. Mahiri understood that now.

She stood by to watch her twin convert while she slurped and suckled on that girthy rod of pitch black rat dick. Her urges compelled her to engulf it all at once and shove it straight down her throat while she facefucked herself down into the white fluff of Victoria's crotch. From there she simply nursed it a while, suckling down all the juices she could get, sniffing deep of the natural musk clinging to the white rat's fur. Mira moved in behind her to knead her sister's shoulders as that feline body grew more and more rodentlike. Her patterns grew indistinct, dusty-looking. Her tail went pink and naked, thicker than it had ever been. Soft cat paws shifted into big pink rat feet, and all the while she serviced her new plaguemistress as if it was her only purpose.

Mahiri had to reshape her sucking angle as her muzzle transformed into something else. Even losing her former species did nothing to dissuade her from sucking that lusty doctor off and gulping down that pure plagueseed from the tap. The spurts Victoria gave were thick enough to nearly count as a cumshot already. That new rat mouth could really suck. Mahiri already liked the feeling of it.

A cock fit nicely between her lips as long as she aimed it towards her throat just right. She was every bit as soft and shapely as ever, maybe even a little more once that change fully came over her. Just like Mira, she'd shifted entirely into a rat, never to return to her feline nature, all while down on her knees before the great queen of pestilence herself, the mad doctor who would infect the world. Her reward was every bit as satisfying as she'd hoped.

There came a twitch and a bulge of a particularly thick vein on Victoria's cock, then she huffed through her mask as she let loose. A load of defiling cream shot straight down Mahiri's gullet. She chugged it as swiftly as she could, drooled it when she couldn't swallow it all. The rest she took upon her face, her tits, and all the way down to her thighs where the streams of spurting spunk splashed down and pooled around her. Those shiny nuts could really pump.

They flexed hard to work out a titanic cumshot all over the new rat in her swarm of followers, like a baptism of corruption. Mahiri felt her pussy clenching with desire as she held her dripping arms out as if in praise to the great goddess of corruption who stood before her. Strands of cum stretched from her body, raining down to the floor, staining that control room in intense musk. Yet for all the mess, Victoria didn't hesitate to reach out with a gloved hand and help her to her shaky feet.

"The swarm shall be pleased to have you, Mahiri. As will your sister, I'm sure."

Mira snuck up and smooched the former leopard on the cheek as if to confirm. Then she took to licking some of the cum off the new rat's fur, idly cleaning her while she listened to Victoria continue.

"Your friends, unfortunately, have had mixed results in testing. Successes, failures, and one curiosity in between. This Snow - the libido-enhancing effects seem especially effective on him. He may require some further impromptu testing. Rio?"

The lumbering approach of a hulking figure was audible from behind the door. He hauled the cum-slathered cheetah beneath one arm. Snow squirmed and faintly giggled, fucked utterly dumb but still hard even after all the rats had done to him. He was still a cat. As the only one in the room, maybe in the entire facility, he stood out amid the swirling sea of rodent bodies. The hordes moved like a liquid mass, parting when Victoria gestured for them to make room. Mira guided Mahiri along and they followed the half-clothed, masked madwoman to a discrete room down the cold, dark hall.

"Come. We shall make a record of this. Let us test his limits with the help of our newest member. That is, if you would enjoy that, my dear Mahiri?"

The tawny rat's eyes glowed their brightest green as they went, and she cast admiring glances to the many others who surrounded them. Moving as a swarm, all intertwined and pressed close to all those other bodies simply came natural to her. Together with all the rest, they filled every gap, every empty space around them, pouring through the halls of the formally abandoned place as a wall, a stream of horny rodents. Some of them pressed close to touch and examined her figure, but they were polite enough. They didn't wish to interrupt any formal science business going on. And they were always rewarded for their patience. To Victoria's question, she just nodded. Whatever she wished.

Mira curled her pink tail around Mahiri's own as they walked together, twins in Victoria's befouled embrace. Snow trembled as he dangled there, drenched and stuffed, still drooling cum after repeated ravagings from the rampaging rats. That horde stood guard outside as they came to a much more pristine bedroom that seemed oddly out of place compared to the rest of the facility. It was cozy, even homely. Mira moved to work on setting up some cameras and Victoria nodded to the biggest rat. Rio placed the cheetah on the waiting bed and left him shuddering there, too dazed to even know what was going on. Everyone spoke as if he wasn't even there, and he could hardly understand them through the mental fog of musk and lust anyway.

Victoria approached to run her gloves along his body, ignoring the mess it made of her leather. Surely she had more to spare. She touched her way down to his hips, then cupped his balls in her palm. A tsk behind her mask came before her murmuring.

"Still needy, even after all they've done to you? This is most fascinating. Let us see how much it takes to drain you dry."

Mahiri hardly needed prompting. A little nudge from Mira and a whisper confirmed what she already knew.

"That means you, sis."

There was still some one good pounce left in the former leopardess. She approached the bed but stopped short so she could crouch low and lunge at the prone cheetah. He was swiftly overtaken by the plush impact of a soft golden rat. His expression hardly changed. With glazed eyes and a vacant smile, he accepted his transformed friend atop him, throbbing all the while. When her pounce didn't immediately result in sex, he bucked and thrust his hips, humping the big rat with urgency. He couldn't control himself. He existed just to get off, again and again, doused in rat musk and swimming in their impure essence. With her own desires blazing between her thighs, she was happy to oblige.

The new rat gnashed and drooled as she positioned herself atop the cheetah's cock. She shoved down on it like he was nothing more than a toy with a thump of her heavy rump, sagging that once-pristine bed beneath her weight. The sheets were already damp as the juicers of their previous encounters trickled from their bodies, flecking about with the rising movement. Mahiri hardly waited to ride that cat silly.

She wasn't gentle with him either. That was a whole lot of soft rodent bouncing on Snow's dick.. A thump of butt down on his thighs and hips alike kept him gasping, whimpering, crying out for the horny rat who sought to drain him dry. A tight squeeze of rising pleasure only helped hurry him along the way until his chirps blended with Mahiri's screamy squeak-shrieks. She liked the new sounds she could make.

As much as he tried to contribute with thrusts of his own, she just drove him down to the bed again and again, overwhelming him with her size, her heft, her strength. She sheathed him in her soaking pussy again and again, let him swim in the flood of corrupted juices leaking from her folds. Every bounce sent a jiggle through her entire body, sent juices flinging off in every direction. The two of them could hardly get any wetter. She leaned closer and closer while she drove him deep into her cunt, puffing in his face. Then she pushed her way into a kiss which he weakly returned. There wasn't much left in him, aside from the urge to cum for those rats that had so intoxicated him.

The heat between Mahiri's thighs spread down his shaft and into his clenching sack. He was still a cat, still hadn't transformed, but that didn't mean a slick pussy wrapped around his cock didn't feel good. She thumped him until he whimpered into her mouth. She sucked his tongue, licked his teeth. And when she felt him shaking with pleasure,she suddenly pulled back and straightened up so she could drive her full weight down on his dick and make him cum inside her as hard as he possibly could.

Snow scrunched his face up tight and clenched his eyes shut while he arched his back down into the mattress and buried himself inside the femrat as deeply as he could go. Balls-deep was an understatement. He all but stuffed his flexing nuts inside the former cat while that rat pussy drained him of his first fat load.

Shooting, spurting, gushing up inside her hardly satisfied that unending desire. He panted and groaned as he came down from that release and felt her squeezing around him while she rested there, sitting atop his shaft. Mahiri didn't bother to pull off for a second round, even if it meant she was squelching his cock in and out on a river of his own cum.

They made even more of a messy as they launched into a second sloppy fucking, bouncing and loudly squeaking the bed. Or was that Mahiri making that sound? He didn't get to hear it for long. Mira soon decided her sister needed some help with that endlessly horny cat, and moved in to eclipse Snow's vision with a thick black butt.

A squish down on his muzzle made him the perfect seat. She planted her pussy on his snout and let him immerse himself in her lusty aromas while Mahiri rode his dick. The rat twins leaned close to press their busts together and smooch while they used the cat beneath them, slathering him sweat and scent alike. He mindlessly licked Mira while Mahiri milked him, again and again. Making him cum just seemed to make him harder, make him throb more often, make his balls pump up tighter and tighter. Maybe he'd never run out.

The ailment inside him fuelled and compelled him to be nothing more than a drooling ratfucker until he couldn't even remain conscious anymore. A deep, hard grind down on his face ensured he was utterly smothered under Mira's backside, sniffing and kissing her pussy while Mahiri's squeezed around his inches. Even if he hardly knew who he was anymore, he took pride in making both rat sisters cum for him.

A squirting gush, a clenching assault. He felt it ripple through the twins seemingly all at once. They really were synced. Twins were like that. They squirted at nearly the exact same second, adding to the mess streaming down Snow's hips and cheeks alike. A little fem scent to drown out the overpowering masculine musk was a welcome change, though he could hardly breathe it with his muzzle wedged inside Mira.

Mahiri drained him once again, pumping up tight around his cock until he came for her right back, shooting his spunk deep into her womb while he made some muffled whimpers between Mira's thighs. That orgasm simply rolled on, maybe into another, or just one single, extended release that finally left him twitching and dry by the time he'd filled Mahiri to sloshing.

The cats remained atop him until he finally started to soften. He nearly passed out beneath the black rat's rump, but he didn't complain. Staring up at the ceiling, he gasped and murmured a little while Mahiri schlurked off his shaft, unaware of anyone around him, or who had approached. Victoria approached to consider the unique subject before her. She tapped on her beak a few times, then simply gave a shrug.

"Hm. While impressive, I don't consider such an anomaly worth further study. Let's put you to good use, Snow."

With a heft of her thick black cock and a few squeezes, she took it from half-firm to utterly engorged. The dark skin stretched taut to the point of nearly translucent as she stroked it in front of his face. He was too weak to move much, but catching the original, purest plaguescent of all was enough to leave him squirming, whimpering with the failed effort to get closer to it and taste it. She brought him to it instead. A glance across his cheek, a stroke along his lips, but she wasn't content to simply tease.

She kept stroking, squeezing, making it expand to its full, imposing side and gape broadly before him. With the best his limited vision could do, Snow stared straight down the cavernous, steadily leaking tunnel opened up before him right up until the moment the plague doctor pushed forth and started to consume him.

Victoria sighed as she started enveloping the cheetah's head in her shaft. What would have been a concerning stretch for someone not so deeply altered by self-experimentation was simply a comfortable inner massage for the great doctor. She slowly jerked herself off while she swallowed the cheetah whole with her cock, squishing him in tight to fit beneath the dark skin of her shaft.

His narrow, girly shoulders didn't give her trouble either. All got compressed and squeezed tight by those inwards, undulating gulps and clenches. It sounded like gulping. He bulged down towards her nuts, left as nothing more than a confused, disoriented bulge slipping into the musky darkness. The scent grew so potent that it took just a few gasps to leave him utterly blanked out, not even comprehending what was happening to him.

The schlurps and schlucks of sliding a whole cat down a slippery shaft send spurts of precum squirting out around his hips as she worked down to his cock and rump. That gave her slightly more pause. He was bottom-heavy, that cute cheetah. Still, it was nothing she couldn't handle. She swiftly had him dunking down to the bottom of her nuts while she immersed him in fresh plague-cream. The taste of the purest stuff, of the source, the sample, the start of it all was enough to drive Snow into an empty-headed euphoria.

He slumped and submitted easily to her lustful hunger, easily swallowed whole and devoured by Victoria's thick, potent, contaminating cock. Her hordes watched his paws and tail tip vanish down the upturned shaft of their beloved plaguemistress, and then listened to her moan as she got the whole cat settled snugly into her balls. They stretched and sagged, sloshing as they swung back and forth with the weight of her full-sized cock meal. Then she gave them all a nod to disperse them back to their posts and duties.

"That shall be all for today. Thank you for your assistance. Mahiri, Mira, if you will ... I would like you to stay. Your friend shall be much more useful once I am done with him, but first, I will require your assistance."

Before she truly understood the benefits and wonders of Victoria's gift, Mahiri might have been horrified by what she was seeing. She was simply fascinated instead. Aroused too. The rat's balls worked fast. They churned inwards to flex and pacify the captive cheetah, though he wasn't exactly resisting what was happening to him. Any squirming was simply a natural reflex, yet quickly suppressed anyway by the glurrrrrn of the plague doc's fat nuts.

They gripped him tightly enough to even outline his expression. Not that there was much of one on his face. The cheetah simply let himself be a vessel for the sensations that tingled away all over him while he got soothingly melted down to cum. Vicky's nuts got a little smoother for every groan and glorp they made.

Perhaps it was a sudden, dawning realization, or perhaps it was little more than the fading remnants of his own survival instincts that made Snow start to squirm while he got digested by the afflicted rat's sack. The former cats were quick to help with that. Mahiri followed Mira's lead, kneeling before the doctor to stroke and admire the shape of her prey. A firm squeeze and squish against his outline helped spur along those gluttonous nuts. Both those converted rats put themselves to work at massaging Snow's whole body, pressing into his struggling form. He was fighting against the inevitable. No amount of wriggling made him any more difficult to melt down to thick, sludgey spunk, and the talented touch of those deeply pressing palms hurried along the musky process.

The method was most effective. What had been a relatively distinct shape of a cheetah's face soon grew less clear as the cat got creamed up by the rat. The more he pushed back at twins and the attention they gave him, the deeper they pressed into his weakened muscles. There was something pleasant about the deep-tissue rubs, but he was far too numb and stunned by rich, oozing jizz in his every orifice, invading his every sense. They pressed until he started to soften, to weak and smooth over, his features glossed to shiny, featureless white. He was less and less a cat the longer he lingered in the steamy sauna that was Victoria's heavy balls.

Soon they were squishing the partly liquefied form of the cheetah between their fingers as they lovingly squeezed their mistress' sack. The cat was gooey and malleable, filling out the empty space around him as his muscles grew useless and soft. The rat doc's cock leaked steadily while she melted Snow down to a fresh load of highly contagious cum. He swelled her balls and left them plump, smooth, perfectly round as he simmered down to join the hot cream soaking into his faded spots. He tasted it while he still could, but soon all went numb, relaxing to the point of utterly giving in.

Victoria ran her fingers up and down her shaft until a sudden twitch produced a powerful clench. A hugging squeeze around all that remained of his silhouette showed just how soft he'd already become, and it didn't take much more from there to utterly flatten out the last of his solid shape with a rich, satisfying GLURK.

The rat's balls bounced upwards with the force of that final conversion, and then they jiggled down nearly to the floor, fattened with their prize, their prey. They pulled tighter and tighter around the pressurized load, but the doctor didn't blow right away. She stood leaking, spurting thin jets, throbbing constantly. Rather than relieve the pressure herself, she instead started to calmly unmask.

Removing all the many layers of her archaic outfit took a few moments, but soon she was bare, the white rat in all her glory, with her two most devoted worshippers before her. She gave a stretch, a brush of a bare hand through her short black hair, and then turned her glowing attention to Mahiri.

"Ahh. Much better. Does get a little warm in there sometimes. Mahiri?"

The tawny rat perked up at the sound of her name. She was ready to assist and serve alike. The naked rat beckoned.

"Do not worry. Your friend shall not go to waste. He shall help us usher in a new generation of carriers. Come over here, if you please."

The new rat moved close to slip into the embrace of her new leader, her plaguemistress. Every touch was ecstasy when she knew it brought her closer to the source of that great blessing, the gift that lived inside Victoria's veins. They kissed, they licked, they exchanged saliva so that Mahiri could feel the tingle running down her throat. She didn't hesitate to follow her mistress' guidance and slump back into that soaked bed. There was no need for any sort of fancy positioning. It was just her and the plague rat atop her, two lusty rodents dripping and pulsing together.

A slather of that afflicted cock along her folds and the former leopard found herself slipping deep into something like a heat. Her puffy pussy ached and clenched with a sudden fiery need to be bred, to be impregnated with that corrupting seed, with that weighty load of cum that used to be Snow. Perhaps she'd carry a little bit of his legacy along with Victoria's own.

A tight embrace kept her close to the warm body of the white rat. A slow, sheathing slide of fat black cock into her cunt kept her crying out until she slipped into one of those delightful squeaks. Oh, they were such fun to make. No wonder the swarm was so noisy. A sag of the bed came with the first thrust, burying it in the rat-hiri's fertile sex. She stretched and accommodated her pestilent queen's cock, no matter how fat it was.

The tap of those heavy balls was its own reward. She felt them still churning, oversized and bloated up with the excess cum converted and stored in them like tanks, or vats. They jiggled as they thumped against her as the plague doctor at last started to thrust. There was no need for the usual dignity or leadership. She was simply there to enjoy herself between the thighs of a loyal test subject.

Mahiri of course was utterly infected, richly imbued with the virus from a carrier and the source alike. Yet she still wanted more. She hungered for it, thirsted for it, whatever properly described the craving running through her. An ache grew almost to pain as she got thumped by the bouncing rat atop her. Victoria drove her thrusts in steadily, yet precisely. She never tired. Her eyes remained open as she focused on her task with the same work ethic as ever, even when she was supposed to be enjoying herself. And she certainly was, judging by the steady pulse of her overhard shaft shoved deep in her squirming subject. For all the urgency clenching in her swollen nuts, she remained calm as she fucked the transformed Mahiri into a moaning, drooling frenzy.

"Yess, yess, I want it, cum him inside me ... breed me with him ..." Mahiri hissed through her teeth as she endured. She craved the finish a little more with every thrust.

"Patience, love."

At least she didn't have to wait long. It took time, but eventually Victoria started to give herself over to a little beastly lust when the pleasure ramped up enough to make her huff and groan a little herself. She leaned her head down alongside Mahiri's and moved from a focused thrust to a deep plowing thump. Mira watched a rat rump going up and down on her sister with two fingers nestled in her own sex, simply taking in the sight and scents alike of heated breeding.

Victoria's prey-swollen balls went slap slap slap and the rhythm kept Mahiri's body wobbling through the rising action. She slowly lifted her quivering thighs and started to wrap them around the unmasked plague doctor's waist, but she didn't get all the way before there came that twitch, that bulging, rigid flex, and the warmth she longed for spilled forth with all the force of a bursting dam.

Squelching, splurching, splattering her full, Victoria bred that new rat with a torrent of flooding spunk unlike any Mahiri had ever seen, much less felt. It was more than horselike, it was a seemingly unending hose of fresh seed, of preyspunk and plague alike pumping straight into the leopard's waiting womb. It trickled down her thighs, it splashed up to her rising, swelling belly and tits alike. A gushing spray of thick rat cum felt as if it satisfied everything she'd ever craved.

Her eyes rolled, her mouth gaped, and all the while she pulled tight for some climactic contractions, squirting for her mistress. Whether it was the spread of the virus inside her or the sensation of that breeding taking, Mahiri really didn't know. All she knew was her pussy and womb alike lit up with a titillating tingle, a crackle of pleasure dancing through all her sensitive places in and out to tell her she was the best, most loyal carrier she could possibly be.

Victoria kissed her on the cheek once she caught her breath. It didn't take her long. For all her unassuming appearance, there had been many changes to her body. Fatigue was a thing of the past when there was so much work to be done. Already, in the tail end of her orgasm, she was focused on a new task. Mahiri didn't even see where the vial came from. Perhaps taken from Victoria's discarded outfit. All she knew was she felt a slightly ticklish stroke along the lips of her well-fucked pussy that left her wriggling and faintly gasping while Victoria collected a little secondhand spunk into the appropriate tube. It was a messy process, but she was satisfied.

"There. Perhaps a little further study is warranted, if only to know for certain."

With that, she corked the top and stood tall above the twins who so adored her, smiling as they gazed up at her with awe.

"Good girls. You two shall be part of the future we bring to the world. An important part of the vision. And now, so too shall your next generation."

Mira giving herself a slow stroke over her soft black belly confirmed what Mahiri was wondering without her even needing to ask. Two well-bred rats, carrying their plaguemistress' tainted seed to term, surrounded by a horde, an army of loyal converts, of carriers. They were bred and devoted, utterly satisfied just to belong to the white rat, to be granted such a glorious gift they could feel flowing through them every time their heart pumped.

The facility would soon be a comfy home, with a little effort, and then the work could continue. There was much to be done to prepare to unleash a new, wonderful creation, a new evolutionary step upon the world, but they had many minds to spare. A thousand rats worked in lusty unison in the shadows of a long-abandoned prison, and there wasn't a cat in sight. The swarm bustled and brimmed with activity, flowing up and down the halls, ready to burst through the doors to spread their seed unto the world until the rivers ran black with corruption and untold pairs of plague-green eyes shone from every shadow.