"Zack is later than he normally is. He's usually here by now to visit the children and have lunch with me"" Sandra thought to herself as she wait in the kitchen. Zack was nearly a half hour late from his lunch break of selling horses, whom Sandra was eagerly waiting on while sitting at the kitchen table with their infant and toddler taking a nap in the other room. "I wonder how he'll take to the idea of moving away from our isolated plot of land to a more populated area so the children can have an easier time making friends..."

Sandra's thoughts trailed to her family's current locale, pondering how she can initiate the conversation over moving away to Zack. For a few years now, the couple had lived in the countryside far from civilization. Social interaction and employment was scarce, and Sandra felt that with their growing family, it was time to move. Sandra didn't notice that an uninvited guest had entered her room. The invader slowly crept up behind Sandra and quickly bludgeoned the 33 year old housewife, rendering her unconscious.

Sandra awoke to the sound of arguing men. As she was coming to her senses, she realized that one of those men was Zack, who was bound to a chair facing Sandra. Surprised, Sandra tried to move, only to realize that her arms and legs were tied to an elevated log. What's more, Sandra had finally realized that she had been stripped of all clothing in the middle of a grassy field. "What is this?!" Sandra exclaimed. The helpless wife could feel a few sets of eyes peering down on her. "Between you and me, missy, this isn't personal." Sandra lifted her chin from the log to turn her head and rested her eyes on three men. One of the three men had his hand in his pants, blatantly stroking his dick. One of the three she could barely see, but she could make out that he had a lasso in his hand with the end of the lasso wrapped around the neck of a horse. The largest of the three men, who she assumed was their leader, stepped forward and spoke, "Your husband's been stealing horses to sell to others, and well, he needs to be taught a lesson", he said with a large grin on his face.

"Don't hurt her! Please, take it out on me instead!" Zack exclaimed, struggling against his restraints. The buff kidnapper grinned, peering at Zack "Oh don't worry, if you steal from us again or tell anyone what happened here, your wife's fate will become your own". The man holding the horse guided the large animal directly behind Sandra, out of her sight. "What are you doing?! Please, stop!" Sandra screamed as she could feel the horse sniffing her vagina. The lasso was taken off the horse, and the man who held the horse laughed aloud. "We slathered your pussy with a powerful potion. Your husband tried to steal this stallion, and as soon as this stallion starts cumming inside of you, you'll experience a deliciously extreme transformation" said the buff man. Upon uttering those words, the guy behind him rubbing his dick inside of his pants started to stroke faster.

Neither Sandra or Zack knew what to say, and before either of them knew it, the stallion mounted Sandra and thrust his cock deep inside of her. The potion the kidnappers rubbed on her pussy lubricated the horse's cock, allowing him to hump Sandra with ease. The stallion's meat easily filled Sandra's insides, and the stallion wasn't even two thirds of the way inside of her. Sandra could feel her mind race a mile a minute, but there was no coherent thought she could focus on. Before she knew it, the stallion's cock started to throb heavily. "Oh god, please, no! He's cumming inside of me!" Sandra cried, struggling to dismount from the beast that was raping her. Rather than the cock slipping free from Sandra, much to her dismay, she could feel it actually start to sink in more! She could feel the massive phallus slowly migrate more and more into her abdomen until the stallion was balls deep inside of Sandra, causing her stomach to bulge with the outline of the cock.

"Zack! Please help me!" Sandra cried with tears streaming down her cheeks. Zack struggled against his restraints but could not free himself from the chair he was bound to. "Sandra! God, no!" Zack exclaimed as he witnessed Sandra's butt and hips begin to melt and fuse with the stallion's groin. Sandra's legs curled uncontrollably towards the stallion's groin, and she could feel her feet touch then sink into the flesh of the stallion's balls. The stallion's cock throbbed more and more, and with each throb she could feel her figure sink more and more inside of the beast. At first, Sandra's stomach felt as if it was tightening around the horse's cock, but after a few moments, she couldn't feel his cock inside of her at all. Unknown to Sandra, the horse's cock merged completely with her innards, and as her hips merged with the stallion's hilt, her abdomen became the base of the horse's cock. Sandra's legs started to deform, and the skin of her arms started to tighten around the joints, pulling her arms upwards and inwards.

Sandra's feet and legs slowly lost their form as they melted into the stallion's growing scrotum. The bones in her legs and feet melted, while her flesh amplified the size of the stallion's testicles. Like her legs, Sandra's rapidly deforming arms somehow pulled free from the rope. Sandra reached her right hand down towards her groin, hoping to somehow pull the stallion's cock from her, not realizing that she and the stallion were no longer two physically separate beings. Her hand rapidly fused with the changing skin that was once her stomach as soon as she reached for what she thought was her groin. Sandra froze with fear, unable to comprehend what was happening to her, only for that frozen stillness to come to an end as her entire body started to pulse and throb beyond her control. The throbbing scared her, and made her feel as if her body was going to explode. Yet, as startling as the sensation was to Sandra, she could feel herself burn with pleasure. Her screams turned to moans, not realizing the stallion was nearing orgasm, and as Sandra parted her lips to let out one massive moan, a rapid rush of cum erupted from her mouth and nose.

In just a few seconds, Sandra had vomited nearly 15 liters of cum. The stallion shifted, pushing Sandra off the log, causing her to fall and hit the grassy ground beneath. She laid there, continuing to cum from her mouth, her head resting in a pool of spunk while her body began to resemble a horse's cock. The flesh around Sandra's hips and lower abdomen darkened and her figure deformed, forming into the lower half of the stallion's cock. Thick veins formed in the surface of Sandra's skin, running all the way up to her neck. Her previously racing heart alarmingly ceased beating as it melted into nothingness, and Sandra could feel the stallion's blood circulating through her in lieu of her own. Where the stallion had been bulging through with his penis was now a throbbing urethra, pumping cum through the entirety of Sandra's being, forcibly expanding her throat. Sandra's moans and screams came to a slow dulling silence as the muscles and organs inside of her melted and transformed into cock meat. Her face slowly started to swell and flatten, her beauty being erased by what was becoming the tip of the stallion's cock.

Zack watched in horror as his wife slowly disappeared into the visage of the stallion's cock. His mind couldn't even comprehend what it was that he was looking at. The massive cum spewing organ danging from the horse's groin was neither a human or a penis, but rather some grotesque blend between the two. The massive organ writhed, almost as if it was trying to get away from the stallion, and with its tear filled human eyes, it gazed up at Zack one last time before its eyelids fused together, forever sealing Sandra's eyes. The stallion tensed once more, hefting his new massive cock up off the ground, ejecting one final stream of thick creamy cum. As the last bit of cum was squeezed from the stallion's new dick, the last of Sandra's human visage melted away into the massive horse cock that she had become.

The buff man grinned widely and behind him, the man who had been jacking off now had his cock pulled from his pants and spewed cum out into the air. Zack was completely zoned out from his surroundings, and didn't even notice the men speaking to him. The man who handled the stallion earlier stepped behind Zack and cut him loose. "We'll let you say your goodbyes before we take back our stallion" the buff man said with a chuckle. Zack scurried over to the massive limp horse cock, almost as if there was a way to undo what had been done. On his knees in the sticky pool of cum with shaky hands and tears streaming down his cheeks, Zack reached out towards the cock. As Zack's hands neared, the horse's new cock slowly retracted into its baggy sheathe. After a few moments, the men guided the stallion back to their hauler, leaving Zack alone in the middle of the field to ponder the grievous error of his ways.