Trevor, their boss, entered the stable and pointed a shotgun at them. He was shocked by what he found, but not realizing all the details he said "I thought it was strange that the stable lights were still on at this hour and I thought there was a thief but it's just the two of you. Kayla and Alyssa, what do you think you’re doing with one of my horses, and Warrior on top of that. Get out of there, get dressed and go to the main house. We are going to have a very serious conversation." He knew all his horses very well, being able to recognize them even after seeing only a part of their body.
Alyssa jumped up, Kayla's cock came out of her and retracted back into her sheath. They were embarrassed to have been caught by their boss in this situation. Alyssa got dressed as fast as she could, meanwhile Kayla got up and only then did Trevor realize that she was a centauress now and had Warrior's body as her bottom half.
"What happened to you Kayla?" Trevor asked and Kayla told everything while searching for her clothes, finding them totally destroyed. He found the story hard to believe, but there was no denying it by seeing his employee. Trecor looked around the stable to make sure nothing happened to the other horses, but he was surprised that they still had all 20 horses in their respective stalls. Looking more closely, he saw that Warrior was among them, which meant that Kayla had not merged with him but her bottom half that had changed into an exact copy of her favorite horse's body. "I don't understand what is happening anymore, I have to ask for help." he said and ran ahead towards the main house.
"And now, what do you think is going to be from us? After what our boss saw us doing, I'm sure we're going to lose our jobs and I can't walk around like this." Kayla said
"I also think we're screwed. Still, I can't help but be jealous of you for being partly a horse now." Alyssa said
"Envy? Didn't you notice that I'm not even a girl now?" Kayla asked
"I saw it, but by the look on your face when you fucked me you were loving it. I envy you so much that I .... aaaahhhhhh" Alyssa was saying when she felt a very strong pressure on her pants, where a bulge formed, quickly grew and tore to reveal a completely hard horse cock. Before she could process what had happened she almost lost her balance when her feet became hooves, her leg joints changed and her entire hip turned into a horse body covered in white fur ripping completely the lower part of her clothes, before her front legs grew. Then her breasts grew too and a golden tail grew on her. Her hair also changed to something similar to a mane, but her transformation ended with a horn growing in the middle of her forehead.
"Are you okay Alyssa? You were transformed too, just like me." Kayla said
"I noticed ti, but my transformation has some differences. Look at this horn that grew on my head, I am a unicorn centauress now." Alyssa said
"And you are a boy down there too." Kayla said
"But I can feel that I still have a vagina back there, that means I am a hermaphrodite. And I need help now, it's your turn to return the favor." Alyssa said, went around Kayla and straddled her co-worker, trying to put her new dick in her friend's equine ass.