Rachel smirked, bobbing her knee as she eagerly stared at the race track. The bleachers were full today, and she was ready to make some money. She had a front-row seat near the end of the track to watch the horses cross the finish line. She brushed her long, platinum-blond hair from her face with a sigh, the smirk on her face lessening as she was forced to adjust her bra. It was a hot, humid summer day without a cloud in the sky. She was excited to see her plans come to fruition but wished it could be a few degrees cooler. Red-faced and sweaty wasn't a look she preferred for herself.

It only took a few seconds before her lips curled into another sly grin, once more recalling the plans she laid out. Her plans were perhaps a bit too intricate; there was plenty of room to fail.

"Please hold onto your seats, ladies, and gentleman!" A bombastic male voice called through the intercom. "Our horses will be out shortly. We have a few difficulties, so it's taking a little time, but the races will go on!"

As the men and women around Rachel began to whisper and groan, she tried her hardest not to burst into laughter. Her estranged twin sister worked with horses and tended them before the races. It was easy enough to lure her away and then sneak in as an impersonator to tamper with the steeds. She was confident she had used just enough tranquilizer to sedate all but one of the horses into a state where the least favorite would win. She even had a few of her friends helping. The small town she picked was in the middle of nowhere, but many people showed up for these races. She heard rumors of strange activity during these events but wasn't worried.

She hadn't thought this plan through too hard. Would it be suspicious if most of the horses were acting odd? Would they test the horses for drugs after the race? Rachel didn't consider any of this. She put all of her money on a single horse and was going to make absolute bank with her best friends, who were sitting elsewhere out of paranoia toward drawing suspicion. Why did my sister move to such a weird town anyway?

As the minutes passed, sweat continued to pour from Rachel's body, her clothes growing damp and sticking to her body. Shouldn't they have started by now? She shifted in her seat, increasingly nervous. Maybe they caught onto her plan? No, they couldn't have. The tranquilizers shouldn't be too evident until the horses began to run. At least, that's what she assumed.

"We have another announcement for all of you!" The masculine voice called once more. "It is with much sadness that I must report that the usual races today are canceled! Money will be refunded to all guests. It seems our lovely horses have been tampered with in an attempt to fix the race!"

Rachel blinked, sitting there completely dumbfounded as she processed this new information. Wait-- what? Was this a joke? Was her plan ruined? Adrenaline surged through her body as she clenched her hands over her knees.

"Instead, we will be doing one of our special shows today for our high-spending guests! Please return to the main lobby for more information," the man continued.

Special show? Oh god-- what the fuck is happening? Rachel tried her best to relax and not panic. All she had to do was get up and disappear from the crowd. Sure, she wouldn't make her money back, but she also wouldn't suffer any consequences for her actions… Right?

Rachel grabbed her purse and stood with the rest of the crowd. Her body refused to move as soon as she tried to take one step. Her eyes widened as she tried to raise her leg, but she was frozen. "What the fuck!" She yelped under her breath, panicking as she struggled to stand up and get out. Despite her best efforts, she found herself only able to curse and grunt in defiance as her body refused to obey.

The crowd thinned out while Rachel remained in place. She quickly noticed her three friends, similarly stuck in place and unable to move. Oh no… A pang of dread shot through her body as goosebumps appeared all over despite how hot it was. The fact that her friends and herself appeared singled out couldn't be good. How was any of this possible, though? What was going on? She barely noticed how uncomfortable her C-cup tits chafed against the fabric of her tee-shirt while her thighs and ass similarly began to strain against her shorts.

Soon, only Rachel and her friends were left, unable to move. It was obvious that they had been discovered, and something horrible was about to happen. Were we drugged!? She thought to herself as tears welled up in her eyes. This was a goddamn nightmare; she just wanted to make some quick money. Why did everything have to go absolutely wrong like this? Around the bleaches, the other three girls also groaned and panicked.

After another few minutes of freaking out, new patrons came in and began sitting in the bleachers.

"Thank you for joining our surprise show today! As discussed in the lobby, please keep some distance between yourselves and our lovely horses. The upcoming process can be quite volatile!" The announcer cheered. "They will be on track soon, however! So it's just a temporary measure."

Horses, what? Rachel trembled, her eyes darting around as the guests began to sit. She noticed the new patrons intently watching the four saboteurs, whispering to themselves as they made sure to keep some distance.

"P-- Please!" Rachel shouted, no longer making any attempt to stay hidden. "I-- I'm sorry; please let me go!" She desperately cried, shaking her head back and forth.

Some of the guests chuckled at these outbursts, while others were in varying states of interest, with some even scrolling away on their phones while they waited for something fun to happen.

"I-- I wo-- oooooh!" Rachel suddenly moaned as an electric pulse shot through her crotch and tits. A slow tingle washed over her entire body, consuming the entirety of her being. “Oooh-- oh goood…” She lulled her head back and shook as her insides churned and swirled. If she didn't know better, she'd assume she had taken some hard drugs. A strange sense of euphoria overtook her despite the primal fear brewing within her. It kind of felt good; how the fuck was this possible?

The male announcer continued. "Our first bet of the day is up! Which of our lovely subjects will finish their transformation first?"

Transformation? Rachel's heart rate rose as she tried to process this new information. That was a joke, right? “No-- I-- ooooh…” She moaned as her thighs, ass, and tits plumped up and filled like water balloons. She felt like someone had attached a hose to her and was gradually filling her with thick, warm fluid. "Uggggh!" Her nipples screamed and throbbed, chafing against her increasingly-tight bra while her soaking-wet panties wedged into her ass crack.

“I-- I don’t… I don't want to change-- pleeeease!" Rachel wailed as the grim reality of her situation sank in. Whether it was witchcraft or something else, her body changed as the seconds passed. She wrapped her arms over her stomach, doubling as a wave of nausea overtook her. Sweat continuously poured from her swollen frame, her panties riding up into her labia and rubbing against her unnaturally sensitive clit.

"I d-- oooooohhhh! Oooh god!!!" Rachel screamed as her clitoris pulsed, sending orgasmic bursts through her pelvis. In response, her nipples throbbed with pain and pleasure, starting to leak creamy fluid into her bra.

Rrrrriip!

The seams of Rachel's bra started to tear, her shorts following suit as they strained against her fattening thighs. As she grew in girth, her clothes threatened to rip right off of her body. In her stupefied state, she shakily scanned her eyes around the bleachers. Her three friends were all growing at different rates. One of them appeared to have stuff, unmoving fingers. Was that going to happen to her next? "Oh fuck-- fuck… Fuck-- oh god…” She shook her head.

"Oh, look at that, ladies and gentlemen!" The announcer shouted. "Miss Katy appears to be taking the lead on her transformation!" This was followed by cries of excitement and disappointment around the stadium.

Rachel's eyes widened in horror as she turned toward Katy, who sitting a bit higher in the bleachers. Her shirt had completely ripped, her now F-Cup tits swinging free from the tattered bra. Katy's jeans ripped, breaking off as her supple ass hung out for the world to see, glistening with sweat under the hot summer sun.

  "P-- Pleeassh, nooough!" Katy screamed in desperation.

Rachel watched in abject horror as Katy's mouth started to jut out from her skull, her nose flattening as her ears migrated toward the top of her head. Katy pleaded for the transformation to stop, but it seemed that wouldn't happen. Oh, Jesus fucking christ, Rachel thought as terror filled the entirety of her being. It was undeniable now; Katy was becoming a fucking horse. That meant she would become one herself. "NO!! PLEASE!" Rachel screamed at the top o her lungs. "I DON'T WANT TO BE A HORSE, PLEASE!"

Katy continued to wail in desperation, her face elongating as her fingers fused together. Soon after, her digits darkened and reshaped as horrific cracking and popping sounds flooded the air.

“She’s-- she’s getting fucking hooves…” The now hysteric Rachel whispered, unable to peel her eyes away from Katy.

"Oh! It looks like Rachel isn't far behind! Please give her your support, everyone!" The announcer cheered.

"W-- What?" Rachel stammered. "I-- Ihm naht--" Her eyes widened as she felt her skull grind and shudder. It didn't hurt, but it was an incredibly bizarre sensation she wouldn't explain. She was made of modeling clay, and someone was reaching in to reshape her. She saw her nose gradually flatten between her legs, her mouth pushing outward as her teeth changed. "Nooh! Plleeashh!" She shouldn't have done this; why did she think this was a good idea? She prayed and pleaded for this to just be a bad dream. Was there any way she could go back in time and take back her awful choice? "Uuuunnghh!" Her body wobbled and trembled, her ass and tits finally growing too large to be contained. Her shirt and shorts ripped, her ill-fitted bra bursting open as her swollen rump and breasts exposed themselves for the world to see. Don't-- don't look at me! She lamented, trying to cover herself.

Her hips and pelvis popped and creaked, growing as her body gradually expanded. Simultaneously, a powerful heat flared up below her navel. She didn't want to admit it but she felt kind of horny amidst the changes. "Oooohh…" Rachel panted, once again casting a glance toward Katy, who now had hooves instead of hands and was sprouting brown fur all over her body.

"Katy's legs are almost done changing! What a lovely set of hooves; please give her your support!" The announcer chimed.

As described, Katy's legs were contorted, glossy brown fur spreading over them. Her legs wobbled, snapping sounds emanating from her limbs. Her knees pulled closer to her torso while her ankles elongated. Her shoes and socks ripped off amidst the changes, exposing her toes as they disappeared into the calcified mass that would soon be her lower hooves. Her ankles stretched to the point where they resembled the lower legs of a breast, being forward in the opposite direction of her knees.

Before Rachel could dwell on the horrific scene unfolding before her eyes, she felt the tingling in her arms intensify. Snow-white fur appeared in patches as her wrists crunched and cracked. "N-- naoooh!" She screamed increasingly inhumanly, her head and face continuing their changes. It only took another moment for her to realize she couldn't move her fingers well. They stiffened and became less mobile by the second. It didn't take a genius to understand what was happening after watching it happen to Katy. "Muh-- muh hahndshh!" Tears fell from her face, dripping to the ground as she tried to wiggle and move her digits. She needed those; without hands, she couldn't use her phone, play video games, or even wipe her ass. Despite begging and pleading, her fingers merged, reshaping and shifting into a lovely set of hooves. In her dumbfounded state, she barely felt her wrist bones and forearms changing to accommodate her new anatomy.

"Please make space for Katy! As her arms and legs have finished their transition, we'll have her come down to the track! Give her a round of applause!" The announcer enthusiastically shouted. "It looks like Miriam and Calleigh will be finishing last!"

The audience cleared a path for Katy, clapping as the increasingly horse-like woman stood on all fours. “Ahhgh-- Ah dohnt wahnt to-- to gooh down thehhre!” Katy groaned as her body moved on its own. While her head and limbs looked mostly horse, her body still retained human elements. As she carefully descended the stairs, her massive ass swung back and forth with every step. Her heaving tits bounced below her while a tail sprouted from her tailbone. From this angle, her steamy vulva was fully exposed for all to see.

This isn't happening-- this isn't happening, Rachel repeated in her head as her hands fully reformed into hooves. White fur continued to coat her body, followed by the strange sensations within her arms manifesting within her legs. Her legs and ankles cracked and ground, reshaping into horse-like limbs. The tingling sensation grew into hot, painful prickling that permeated every cell of her body. “Ahh dohgn wahhnn neeeuughh!” Her tongue grew in her mouth, making it challenging to form human words. All she could do was groan as her feet crackled and stretched, breaking her shoes and socks off as her toes disappeared into the mass that would momentarily become her lower hooves. Her tits tingled and swelled, her shirt and bra ripping off as her now H cups swung free.

"Everyone! Please make way for Rachel! She's going to make her way down to the track!"

Rachel desperately wanted to fight the announcer's will but found her body moving on its own. Just as her legs finished their transition, she stood on all-fours and began to walk down the aisle to the stairs. Each step of her hooves left a loud, inhuman clop on the ground. No! I can't do this-- I can't do this! Stop! By this point, her bra and shirt were destroyed. Her tits leaked creamy milk onto the ground, leaving an opaque trail behind her.

Her panties tore off as she walked, her glistening ass and pussy now fully exposed for the audience to enjoy. "Neeeuuugh! She groaned in embarrassment, slowly descending the stairs as her new tail sprouted from her tailbone and extended outward. The audience clapped and cheered, and Rachel made her way to the track. Everyone had their eyes on her, jeering and laughing as she was left entirely and utterly humiliated.

As Katy reached her spot on the track, her body grew and reshaped, her tits slowly pulling into her chest while her supple, human-like apple bottom grew more muscular and equine. Her human features gradually melted away as her hair fell out in clumps, replaced with a dark brown mane covering the back of her neck, increasing in girth and musculature. "Neeeiigh!" Katy cried, stomping her hooves as her tail flicked back and forth. Her pale green eyes were the last feature left, showing a look of pure desperation. Before long, they darkened and altered, the light of humanity leaving her face.

"Our first horse has been fully formed! She's a beautiful beast, isn't she?" The announcer enthusiastically called.

Rachel could only watch in horror, making her way down to the track as she stood beside Katy. She turned her head, looking at the horse next to her. There was nothing less; if she didn't know better, she would assume this was just a well-bred racehorse. "Nnnneeugh!" Rachel trembled as her girth increased, all remaining shreds of clothes falling from her body. White fur nearly covered the entirety of her body at this point. Her tits throbbed, spritzing milk onto the ground as they receded into her body. I don't want to be a fucking horse! PLEASE HELP ME! She begged in her head. "Neeeighh!" Her muzzle lacked the ability to communicate; there was nothing she could do but flail her hooves and swish her tail.

Her round ass tightened against her rear, her neck straining and growing as a fluffy white mane sprouted forth. She felt the last shreds of humanity slipping away as her blond hair fell onto the ground. As her changes were completed, she couldn't stop the burning heat within her nethers. There was a desperate need to be filled by something she couldn't get out of her head. No, no, no-- this is a nightmare…  The colors she saw dulled and grew pale, her eyes shifting as her field of vision changed. As her new eyes were on the sides of her head, she had an increased field of vision but found it difficult to see directly in front of her.

Rachel was utterly lost in thought. How long would this last? Was this forever? What were they going to do to her? She continued to protest, thinking about the mistakes she had made in life. She wanted a do-over, another chance to do things right. Was that so much to ask? There was no way she would be stuck in this absolute nightmare forever. She didn't even notice when the other two girls made it to the track and finished their transformations. Even when the announcer began to speak again, she was too lost in thought to pay attention.

"We're finally onto our second bet of the day! Those who didn't bet on Katy finishing first will have another chance to make some big cash. So, who will our stud, Casanova, pick as his mate?"

Rachel briefly heard some of what the announcer said this time. Stud? What was going on? Amidst her confusion, an overwhelming musky scent flooded her nostrils. Instinctively, her body shifted, and her tail rose. What-- what the fuck? Her loins throbbed and writhed, leaking hot fluid as she felt a bizarre need bubble within her.

"He's going for Rachel! It seems she will be our first lucky horse to get impregnated today!" The announcer roared as the audience burst into cheering and groaning.

Before Rachel could react, she felt a powerful muzzle nuzzle her thighs and rear. She shivered as a large tongue brushed over her vulva, sending hot, desperate tingles. Oh god-- no… Please, no-- I… I need the-- no.. I don't-- I don't want this-- I need-- I need this! Her instincts kicked in hard, threatening to override any sense of reason. In response to Casanova's advances, she stiffened her stance and raised her tail. Without warning, she let out a quick stream of urine. WHAT AM I DOING!? She weakly neighed, feeling deeply humiliated. Why the fuck was she peeing right now?

That was the only signal Casanova needed. He adjusted and mounted Rachel, pressing forward with his massive, erect shaft.

"Neeeeugh!" Rachel moaned as the inhumanly large pillar pressed through her wet folds and penetrated her throbbing pussy. No, no! STOP!! She wanted to protest but was unable to. The stallion pushed his cock all the way in before pulling back and thrusting again. A deep, warm pressure built within her body as he got into his rhythm. It wouldn't stop growing and mounting beyond anything she had ever felt while having sex in a human body. It suddenly hit her; she would get pregnant and birth calves. She would be a horse AT LEAST that long. No, no, no-- oh-- oh god-- it-- feels so good… So fucking good! She neighed and moaned as her pussy stretched and spasmed, gripping Casanova's shaft.

The tension built as small orgasmic bursts rippled through her muscular, equine body. Her internal pleas of protest were drowned out by ecstasy as Rachel finally hit her climax. Utter bliss consumed her as buttery warm waves of ecstasy erupted from her vagina and consumed every fiber of her being. No-- I… I-- I hope I will be a good mother-- I, no! I-- I can't!" She tried to fight her primal nature but couldn't deny that an increasing sense of excitement had built within her.

The announcer laughed. "As Casanova picked his lovely mate, we will allow our other horses to return to humans at the end of our activities today. I think they learned their lesson!"

W-- what? Rachel blinked, trying to think coherently in the afterglow of the best sexual experience she had ever had.

"But Rachel is going to be in it for the long haul! I think she will enjoy her new life, so please support her!"

The audience cheered, giving Rachel applause. Everyone had the utmost confidence that Rachel would enjoy her new life of leisure and receive mind-numbing pleasure whenever she wanted.

END

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