Immunity - Pt. 04: Escape

Part 4: Escape

Brooke wasn't sure how long it had been before she came back to her senses. The security room was quiet, save for the hum of running computer servers; the heavy thudding of Skylar's fists against the locked steel door outside had ceased at some point.

Brooke lay flat on the cool polished concrete floor, her ragged pants gradually slowing, each breath causing her expansive, exposed tits to rise and fall in the dim fluorescent light of the room. The all-consuming arousal had subsided somewhat, yet a suffocating, unnatural heat still pulsed relentlessly through her veins, concentrating with terrifying intensity between her thighs.

Trembling, Brooke slowly sat up, her own semen dripping off of her chin. Her hands shook as she lowered them to her lap, her eyes widening in horror as she finally, reluctantly looked down to acknowledge what had happened to her.

Her pleated skirt was ruined, pulled taut and lifted high over her voluptuous hips by the sheer mass beneath it. Standing out from between her legs was her thick, fully formed, throbbing erection -- heavy, slick with greenish, milky fluid, and pulsing with every beat of her heart.

No... no, this can't be happening to me...

But it had. It had finally happened. She'd been exposed again and again, and now she'd been fully transformed. Transformed into one of them...

Out of a horrified compulsion, her hand moved down toward her newly grown alien appendage before abruptly pulling back. Then, steeling herself, she worked up the nerve to lightly brush the head of her cock. The moment her skin made contact, a white-hot jolt of electric pleasure shot straight up her spine to the base of her brain. Brooke gasped, her back arching instinctively as a low moan escaped her lips before she could stop it.

"Ah... nnngh!"

A wave of intense, dizzying arousal flared up once more. As before, it felt sickeningly good--a deep, primal ache that demanded satisfaction, and yet still... she realized somehow she wasn't completely gone... not like the others.

"I'm still.. I'm still myself," Brooke whispered aloud, her voice trembling as she frantically pulled her hand away and pressed it over her mouth. "This... this isn't me. I haven't lost myself... I'm still in control..."

It seemed to be true. Although she'd been completely transformed physically, her mind hadn't been completely consumed, totally corrupted. There was still hope then, however small of a glimmer... But even as Brooke tried to encourage herself, it seemed as though her lower body throbbed harder in response, dribbling a strand of fluid onto her bare thighs. The subtle green sheen in her eyes flickered in the dim room as her body threatened to completely drown out rational thought.

Stay in control... Don't let it rule you...

Struggling to maintain focus and control over herself, Brooke dragged herself up onto her feet, her wobbly, lengthened legs barely supporting her altered frame. She stumbled over to the central security console, leaning her naked, heavy chest against the edge of the desk for support.

Trying to center herself, she fought to clear her head, figure out what to do next. Escape, she thought to herself. She needed to escape, before... before she...

Brooke wasn't able to admit even to herself what would happen if she stayed...

It doesn't matter, she thought with a rough shake of her head. She just needed to get away from here... and she needed to find a way out in order to do that. With trembling hands, Brooke hit the master power switch on the console.

A wall of two dozen CCTV monitors flickered to life, bathing the dark security hub in a cold, blue glow.

Brooke stared at the screens, her breath catching in her throat. Every single camera feed displayed scenes of wild, rampant debauchery. The entire mall had descended into total, uninhibited chaos.

One screen showed the main atrium where Brooke had first witnessed the beginning of this insane outbreak. Transformed shoppers were openly coupling on the marble floors and fountain edges, their bodies glistening with sweat, among other bodily fluids. Another monitor displayed the inside of a clothing boutique, where three hyper-endowed women had trapped a panicked survivor on a fitting room bench, taking turns forcing their payloads down her throat. Everywhere Brooke looked, the infected had succumbed completely to their primal, animal lust.

This.... This is so messed up, Brooke thought, trying to muster up feelings of shock and horror that she no longer truly felt. Instead, she could feel her body responding to the depravity shown on every screen. Women sucking each other off. Women double-penetrating each other, along with dwindling numbers of uninfected. She happened to catch a victim in the midst of being attacked, watching as she first struggled in terror, then shook and convulsed as she was transformed, growing fitter and bustier, shredding her clothes as her gigantic cock emerged, finally being overtaken by the all-consuming lust, jerking herself off while she was plowed from behind...

Stop watching this... Look around, she told herself. You're supposed to find a way out...

She forced her eyes to sweep from monitor to monitor, trying to maintain the pretense of looking for an escape route, but the explicit, raw imagery bombarded her, directly feeding the fire coursing through her blood. Her pulse hammered in her ears, her mouth going dry, her gigantic tool growing even harder, now pressing up against the console edge.

"Stop looking... turn it off..." she whimpered to herself as her eyes remained glued to the screens, completely unable to break away; a perverted voyeur getting off on the hedonistic exhibitions all around her. The urge to touch herself again was growing and Brooke bit down on her lower lip, fighting to repress it.

It was only then that she glanced over at one of the monitors near the bottom. In it, an over-sexualized brunette was standing, bent over at the waist, at an angle that happened to be facing the camera nearly head on. Her delicate features were twisted into a snarling expression of pure, unadulterated lust as she was roughly pounded from behind, her big cock bouncing up and down until she caught it in her hand, jerking herself off, copious amounts of sticky fluid dribbling continuously from her swollen head.

It was someone Brooke actually recognized, she realized with another unwelcome jolt of arousal in her member; the young, pretty sales girl from a popular jewelry boutique. Brooke turned her attention to see that the girl was getting rammed from behind by a stunning, infected blonde, her head down, singularly focused. Brooke felt her own cock aching as she watched the woman's huge tits bouncing up and down as she slammed into the sales girl with uninhibited carnality, her taut, flat abs flexing with every rhythmic thrust.

It was only when she flung her blonde head back, letting out an apparent scream of bliss that the silent camera wasn't capable of transmitting, that Brooke saw that it was Skylar.

While Brooke had been lost in the haze of her own transformation, Skylar had apparently left the service corridors, going out into the mall proper to sate her ravenous, deviant appetite elsewhere...

Now Brooke watched, paralyzed, as her younger sister furiously mated with the transformed shop girl, reaching around, grabbing handfuls of the girl's huge tits, while she slammed herself into her. The infected girl threw her head back, moaning silently on the camera feed as Skylar enthusiastically used her, her green eyes glowing with wild, unbridled lust.

"Oh god..." Brooke let out a low moan, as her cock twitched, going instantly rock hard. It was sick, twisted, and filthy to feel anything watching Skylar do this, fallen and corrupted, but Brooke's body was heedless, aching to be touched.

Don't watch this... Close your eyes...

She squeezed her eyes shut, trying to tear her face away from the monitor, but the image of Skylar and the girl's frenzied coupling remained seared into her brain. Instead of cooling her off, the sheer tabooness of the act -- seeing her own sister completely uninhibited, aggressive, and slutty -- sent a violent surge of unnatural, twisted heat straight into her loins.

Her newly emerged length twitched violently once more against the cold metal console, throbbing with a heavy, agonizing demand.

"No... please, no..." Brooke whimpered, tears of sheer frustration spilling past her closed eyelids. She fought with every ounce of her willpower, trying to summon the memory of who Skylar used to be... Her younger, occasionally annoying sister. Confident and sassy, obliviously popular. Nothing like what was on the monitor in front of her: more toned than she'd ever been, curvaceous and busty, golden blonde hair, longer and fuller than before, and a massive cock between her legs...

Brooke tried to summon up disgust to overpower the pleasure, but her mind's corruption drowned out the horror, twisting it directly into raw, uncontrollable arousal, watching her sister's unrestrained, animal rutting, the way that she'd utterly succumbed into being a horny, filthy, dickgirl slut...

Against her will, Brooke's eyes snapped open again, fixing back on the glowing screen.

Watching Skylar's hips buck on the monitor, the infected shop girl pumping herself back, matching her sister's frantic rhythm, Brooke's cock ached with need, demanding stimulation. She could only imagine how it must feel for Skylar right in that exact moment, her member sliding inside of a tight, hot, dripping hole... Brooke could feel the lust taking over again; she couldn't resist it any longer...

"Oh god..." Brooke moaned again softly, horrified by her own voice. "Skylar..."

Her hand moved on its own, reaching down beneath her ruined skirt and wrapping her slick fingers firmly around her own immense, throbbing tool once more.

She let out a loud, breathless sob of shame as she began to stroke herself. Her face burned with humiliation at her own twisted desires, but the unnatural urge driving her body was completely undeniable.

Her stroke was fast, desperate, and unrefined. Every slide of her hand sent waves of overwhelming, intoxicating ecstasy crashing through her altered body, feeding on the forbidden sight of her sister and the girl on screen, even as she burned with guilt and self-disgust.

"I... I can't... uhhhnnnn..!" Brooke gasped, her mammoth bust swaying wildly as she leaned closer to the glass screens, completely unable to stop her hand.

Her hips thrust forward into empty air, her hand a slick blur as her body built toward a catastrophic climax. The green sheen in her eyes flared brightly in the darkness of the security room.

"Skylar...

"Skylar...

"Oh, you fucking slut..!"

Brooke cried out, her back arching as her entire body locked up in a violent orgasm.

"Unnnnnnhhh!"

Her huge cock surged, erupting with incredible force. Thick, glowing green streams of cum poured out in thick pulses again and again, spraying across the console and splashing directly onto the CCTV monitors, obscuring the camera feeds of her sister in heavy, warm fluid.

Brooke collapsed forward over the desk, panting heavily, her huge tits heaving.

As the peak of Brooke's climax subsided, intense shame and disgust flooded back to fill the void. The green sheen in her eyes faded back to her natural sky-blue. She stared at the fluid-splattered screens in utter horror, repulsed by the way her body had betrayed her mind. Trembling, she pulled her hand away, wiping her face as tears of humiliation tracked down her cheeks.

This is so fucked up, she thought to herself miserably.

But even as her failure to resist her corrupted body weighed heavily, the scenes of debauchery bombarded her, refueling the burning embers of lust within, causing her member to twitch anew.

"I can't stay here," she whimpered aloud miserably. "I need to find a way out..."

Brooke tried to summon up her willpower, though she was also acutely aware that in order to escape she'd need to leave this secure room and risk everything. She knew what getting exposed again would mean... She could feel how precarious her mind's state was, how easily she could be pushed over the edge. If she were exposed even one more time...

At the same time, the reality was that staying here simply wasn't an option. The arousal burning within, the temptation on every screen, was eroding away at Brooke's resolve bit by bit. Her cock ached at the idea of giving in altogether, just wandering out there back into the mall, allowing herself to be taken...

No!

With another violent shake of her head, Brooke abruptly stood up, looking about the office, scanning for something, anything that would help her to escape. When her eyes settled on a series of hooks on the wall holding nearly identical sets of car keys, she saw her way out.

***

Brooke cracked the heavy door of the security office, listening intently before peeking out into the empty hallway. Pulling the remnants of her ruined shirt tightly over her enormous chest, she stepped out into the corridor, clutching the car keys until the cold metal bit sharply into her palm.

Having found a map back in the security room, she navigated the winding service corridors from memory with confidence but her every step was an exercise in agonizing distraction. Her increased height still left her slightly off-balance, and the light friction of her brief skirt continuously rubbing against her thick, sensitive, drooling shaft was maddening.

The unmistakable scent of sex hung heavy in the air, which was also immensely distracting, seeming to conjure up mental images from the monitors, flashing behind her eyes -- transformed women overrunning the concourse, raw debauchery... and that vivid sight of Skylar and the girl from the jewelry store coupling... All of it served to refuel the embers of lust that burned relentlessly in her core.

Brooke paused, pressing her back against a cool concrete wall as a sudden wave of heat surged through her veins.

Stay focused, she commanded herself, her breath coming in shallow gasps. Just get to the parking lot...

Her free hand twitched involuntarily, aching to slip beneath her skirt and stroke the heavy, throbbing tool to seek relief from the relentless pulse between her legs. Squeezing her eyes shut, she fought her own traitorous body, tightening her white-knuckle grip on the car keys, then forcing her legs to keep moving forward into the dark.

Her boots clicked loudly against the concrete floor as she navigated the maze-like corridors. She stumbled twice, her altered frame heavy and hyper-sensitive, each jolt sending a spike of unwanted pleasure up her spine, but she kept moving forward out of sheer determination.

Finally, without encountering anyone, she reached the heavy fire door that led to the parking lot. The cool air of the concrete enclosed space hit her face, but it did nothing to quench the fire inside her.

Brooke stepped out cautiously into the quiet expanse of the underground garage. Scanning about, she saw no one and nothing other than rows of shoppers' cars and then at the far end, a few white trucks and sedans with yellow flashing lights affixed to the top of each one. Brooke hit a button on the remote on the car key she had in hand, and one of the pick-up trucks silently flashed its lights as if in greeting.

She made her way across the parking lot at a brief running walk, again ignoring the way all of her new considerable assets -- both above and below her waistline -- jiggled and bounced enticingly, the heels of her boots clacking loudly in the hollow space.

She breathed a sigh of relief as she approached the truck. Her escape from this nightmare was mere feet away. While she had no clue what she would do once she got out of here, at least she'd be in the enclosed safety of the metal cabin, her foot on the gas, the engine roaring, putting all of this lewd, sordid madness behind her.

Only, just as she was nearing, almost reaching out for the door handle, a nearby voice rang out.

"Where are you off to..?"

Out from between parked cars to Brooke's side, Skylar stepped out into view. Her younger sister's shredded clothing barely hung from her sexualized, curvaceous figure, her bare, toned skin glistening with sweat in the hard halogen lighting. Her iridescent green eyes locked onto Brooke with hungry, predatory focus, the enormous, throbbing length between her thighs leaking onto the rough concrete.

"Skylar..!" Brooke started, her eyes automatically soaking in every inch of her sister's altered new form and instantly, all sorts of base, perverted thoughts automatically filled her head. She tried to shove them away and force herself to keep focus on her escape, so close at hand.

"I'm leaving, Skylar," Brooke responded with a conviction she didn't actually feel. "Come with me."

"Leave..?" Skylar asked increduously. "Why would you want to leave?

"Everything... Everything you could ever want is here. No stress. No responsibilities. No judgy, catty so-called friends... There's only pleasure here, Brooke. Endless, raw, animal pleasures, each better than the last..."

She twisted her body sinuously, taking her drooling cock in hand. Brooke felt her own erection twitching in response.

"No, Skylar..." It sounded less like a refusal and more like a plea. "Please... You have to fight this... Don't give in to the corruption..."

Brooke felt like she was talking to herself. Even as she begged Skylar, she could feel the lust rising within her own traitorous body, wanting the things her sister wanted... Twisted, wanton things... She swallowed hard, putting a hand out onto the door handle of the vehicle. "Just come with me, Skylar, please... I don't want to leave you behind..."

"Oh, Brooke," Skylar whispered softly. She took a step closer. "Then don't. Don't leave... I just want you to stay here with me."

She put a hand on top of Brooke's, soft and warm, seeming to sap away Brooke's willpower as it gently pulled her own hand away from the car door. They stood regarding each other, mere inches apart, Skylar's serene green eyes locked with Brooke's tormented blue ones.

"You're my big sister, Brooke," Skylar whispered, and Brooke could only stare, transfixed, at her full, lush lips. "I've always looked up to you... I love you so much, Brooke... I've always thought you were so beautiful..."

Skylar reached out and took Brooke's other hand in hers, their enormous busts nearly touching. Her voice was quiet and loving, seductive and inviting. The affection was there but it was tainted with a note of perverse excitement that had Brooke's skin ablaze.

"I'm sorry I resented you, Brooke. It's because you really are perfect... so smart and confident, so beautiful and pure...

"You're so amazing... so attractive...

"I don't just want to be you...

"I want to be with you..."

Skylar's lips grew closer and closer as the words tumbled out.

"My hot, sexy sister... I want us to be together..."

This... this is so fucked up... Brooke realized she was panting openly. Everything Skylar was saying, Brooke felt herself. Skylar was so agonizingly hot and sexy...

I can't... do this... Not with my own sister...

"We'll use our new bodies to make each other feel soooo good, I promise..."

... Need to... escape...

"With our big, slutty tits... our big, hard cocks..."

Even as she said it, Skylar's massive erection rubbed up against Brooke's, and they both let out a startled, shuddering gasp.

Oh...

"I'll show you how much I love you...

"We'll be together, every day..."

Skylar's green eyes were wide and luminous as she moved slowly, deliberately, sliding her thick, dribbling shaft against Brooke's with blazing, inexorable pleasure.

"Being together... Our bodies close..."

Brooke's mouth was hanging loosely, slightly working, panting loudly. Her back was arching of its own accord, her huge tits rubbing against Skylar's, nipples hard and erect, their stiff dicks rubbing together...

"Hot, and wet..."

Their lips were inches apart, feeling each other's hot, excited breaths.

"Raw, nasty, dirty fucking..."

Brooke didn't know who started it first; the next thing she knew, she and Skylar were making out heavily, lips, tongues sliding in and out of each other's mouths, their enormous tits smashed up against each other.

Their hips were grinding together, rubbing and pressing their hot, turgid shafts up against each other, groaning breathlessly, running their hands all over each other.

God, I'm sick, Brooke thought to herself dimly, as she felt the lust taking over. Making out with my own sister...

But knowing how twisted and depraved she was becoming only turned Brooke on more. Thoughts of fleeing were instantly forgotten and when Skylar pushed her back onto the hood of an adjacent sedan, Brooke let her, spreading her legs eagerly, wanting her sister between them, her arms wrapped around Skylar's neck, unable to stop kissing her sister, needing more.

Skylar reached down, hitching the tattered remnants of Brooke's skirt up past her flared hips, exposing her completely. Brooke's body thrummed with excitement as she felt her sister's member down between her legs, feeling its swollen dribbling head up against her slit... only then Skylar shifted herself lower.

"Wait a minute..." Brooke, suddenly realizing what was happening, broke away from their kiss, but Skylar promptly dove into her neck, mauling it, licking and sucking. Gasping with pleasure, Brooke's mind went blank for a few moments... but then she tried to twist away again as she felt Skylar's weight shift downward..

"Not there!"

Brooke struggled to sit up, but Skylar pinned her effortlessly, the cool metal of the hood pressed against her bare back, their mammoth tits still pushed up against each other's. Brooke's member was pressed up against her sister's flat, toned stomach as below she could feel Skylar's thick head pressing, probing, first against her taint, and then further back...

"Wait, Skylar... Don't..! Not like this..."

"Fight all you want, Brooke," Skylar whispered in her ear, her voice ragged with prurient excitement. "It just makes it dirtier..."

Knowing what her own younger sister wanted to do to her was so sordid, so unbelievably filthy and sick... Brooke knew she should've been abhorred by the sheer, salacious nastiness of it, but the knowledge only made her cock ache with need...

Her protests were for an entirely different reason. It wasn't because of how wrong and perverted it was... It was because she recognized how badly she herself wanted it to happen.

And she knew what would happen to herself if it did...

"Skylar, no," she gasped as she felt her sister's cock pressing directly against her asshole.

Skylar's own face was a mixture of mindless lust and ecstatic bliss, her green eyes wide and depraved smile spreading as she wrapped her fingers around Brooke's rigid erection, making her gasp again with pleasure. Brooke's traitorous body belied her protests, her back arching, giving Skylar better access as she pressed her hips forward with inexorable pressure.

"No, Skylar! No, nuh, nuh, nuhhhhhhhhh!"

Brooke's protests dissolved into a wordless cry of ecstasy as her ass spread, taking the length of Skylar's incredible girth deep into her rear, her nipples going painfully erect.

"You sick little skank..!" Skylar groaned. "Your dick just got so hard..!"

It was true. As the hot, thick intrusion filled her rear completely, Brooke's cock instantly went rigid as stone, reveling in the violation. The sensation was overwhelming -- an agonizing blend of intense pressure and raw, electric pleasure that shattered her thoughts instantly.

"Skylar!" Brooke squealed as her sister withdrew, nearly pulling out completely before slamming herself back in. Skylar established a brutal, relentless pace, her hand still wrapped around her sister's shaft, stroking her off.

"Look at you," Skylar moaned, her green eyes flashing wildly as she drove into her sister again and again. "You dirty, corrupt slut... Taking your little sister's big hard cock deep up the ass..."

"Skylar, wait..." Brooke panted, desperately trying to hold on to her sanity even as her body was wracked with pleasure.. "Ooh fuck, wait... please...

"It feels too... it feels too fucking good..!"

Brooke was squirming around Skylar's cock, humping her hand, desperate to escape the intensity of the pleasure one moment, needing more the next.

"I can't believe you," Skylar grunted as Brooke rhythmically ground her hips instinctively back against Skylar's eager thrusts. "Pumping your dirty ass on my cock... Desperate for your slutty little sister to ruin you..."

Brooke again tried to tell herself how sick and wrong this was, but every deep, throbbing, wet thrust shoved her resistance further and further away. She could feel it happening deep inside, could feel the last remnants of herself slipping away, her mind unable to tolerate all of this sheer, hedonistic pleasure.

"Awwww shit, Skylar..." she groaned heavily. "You're fucking... you're fucking my brains out.."

With her last remaining ounce of resolve, Brooke reached out, placing her hand on top of Skylar's, which still wrapped around her shaft.

"Stop, Skylar, stop" she moaned. "It's... it's too much... please.. I can't... aahhh!"

But even as she said it, Brooke began helping her, the two of them now stroking her off together. Her cock was growing burning hot, fit to burst, going rigid as blazing hot semen welled up her length, and she could feel her sister's shaft deep inside of her ass stiffening as well.

Brooke could feel it, feel her mind breaking... She couldn't take any more...

"Please don't..!" she begged, her voice high and strained, her hips rising into the air, while Skylar mercilessly pounded her asshole. Brooke was still frantically gripping her sister's hand, using it to jack herself off, struggling nonetheless with all of her willpower to keep the jizz from spilling out.

"Not in my ass.!

"Don't cum in my ass...!"

Once Skylar did it, Brooke knew it would be more than she could stand... it would feel too incredible. She knew it would make her cum harder than she ever had in her whole life. And once she did, she'd never be able to resist the pleasure again...

"You're gonna...

"You're gonna make me your whore..!"

Skylar grunted as she mindlessly humped her sister, pumping until she reached her absolute limit. She pulled out, agonizingly, tortuously slowly, nearly withdrawing all of her tremendous length completely, pausing for one excruciating moment, eyes squeezed shut; and then she slammed herself back in with a gut-wrenching thrust. Skylar locked her hips hard against Brooke's rear, her body convulsing as she let out a loud, breathless moan.

"Ohhhhhhhhhhhhhhhhhh!"

Deep inside of Brooke's ass, Skylar erupted.

"Unnnnnnnhhhhh!"

A tidal wave of molten, scalding heat flooded Brooke's bowels as her sister unloaded a huge, burning torrent of green, sticky semen straight into her rear. The sudden, intense sensation of her younger sister violently squirting deep inside of her ass sent an electric shockwave directly to the pleasure centers of Brooke's brain.

Feeling Skylar unloading in her ass made Brooke instantly begin cumming. Her back arched wildly as her body went into uncontrollable spasms and her own thick, throbbing cock finally exploded with incredible force, spurting thick, glowing streams of milky fluid. While she and Skylar unceasingly stroked her together, Brooke messily ejaculated all over herself once more, only this time the volume of her load was exponentially larger than any that had come before, practically drenching her own sleek, flat stomach, her huge, glistening tits and pretty face.

"Oh... OH GOD!" Brooke shrieked.

The sheer, overwhelming realization of what was happening -- feeling her little sister nut inside of her asshole -- completely obliterated Brooke's mind, sweeping away every trace of shame, guilt, and restraint. She felt it, felt the last remnants of her old self evaporating away, replaced entirely by the all-consuming, deviant lust, and it felt good... It felt so good to let go. The green sheen in her eyes flared brightly, locking into a permanent, iridescent glow.

When the two sisters' shared peak finally subsided, a profound, eerie silence fell over the dark garage, save for their pants and gasps.

Brooke lay flat on the hood of the sedan, the heaving of her gigantic chest gradually slowing. She stared up at the exposed ceiling pipes, her glowing green eyes unblinking, basking in the heavy, throbbing heat that now filled her body from head to toe, twisting sinuously, luxuriating in the sensation of her sister's cock still buried deep up her ass.

When Skylar finally pulled her thick, monstrous shaft out, a gush of her semen pouring out of Brooke's asshole, Brooke let out a sensuous moan, the car keys sliding out of her hand. Panting heavily, she sat up slowly, gazing at Skylar with a lazy, euphoric, and utterly corrupt smile, lustfully taking in every enticing inch of her younger sister's incredible, altered physique.

Leaning in, Brooke pulled Skylar into a deep, messy kiss, smearing her own cum on her sister's lips without a trace of hesitation.