Sophia has just inherited her grandmother’s house, who was a scientist. Sophia and her friends Roomie and Kass arrive at the house in the middle of the woods. When they arrive, they see that it looks like a mansion. They go inside and see that it is abandoned and full of filth. Sophia and Kass plan to move in, so each of them goes to explore in their own way: Sophia to the second floor, Roomie to the top floor, and Kass to the basement.
Sophia finds a high-tech gun that looks like a toy, sees a mirror and starts posing; Roomie finds a box full of milk and drinks it without realizing it was a chemical drink; and Kass finds serums to enhance the client, so she injects them to see what effects they have and the two girls suffer a transformation.
Roomie’s breasts and buttocks grow, and she starts to feel the urge to have sex with her enormous enhancements. Kass grows a penis and her muscles develop. Sophia hears loud screams and accidentally fires the gun at the mirror, which ricochets back at her She suffer a transformation: a penis grows, her breasts and buttocks become enormous, and she develops large muscles compared to Kass. When the transformation is complete, she looks in the mirror and sees what the gun has done to her. She goes out to find the others, even though it’s difficult for her to get through the door because of her size. When she goes down to the basement, she sees Kass, who has almost the same body as Sophia. Neither of them knows what’s happening, so they go out to find a solution while Sophia gets aroused looking at Kass’s body.
Kass and Sophia find their roommate masturbating and wanting sex. When he sees them, she jumps towards them, licks their breasts, and faints from exhaustion. Kass and Sophia take him to bed.
They’re in a room, and while Kass searches for answers, Sophia sees his butt and can’t resist any longer. She inserts her penis into Kass’s vagina, and since they’re alone, they decide to have sex. When they finish, they decide to investigate, testing and pushing the limits of the drink, the gun, and other gadgets until they find the one that will help him return to normal. From then on, they stay in the mansion for several days, having sex and enjoying each other’s bodies.
