After her father dies, Nenne continues living with her stepmother. One day, she refuses to date one of her classmates, and he turns into a stalker. The guy goes to her house while her mother is away, and he persuades Nenne to fuck him and let him cum inside her. The stepmother comes home and sees this and she's not sure what to do, so she joins in on the action! The stalker continues to live in the house and turn it into his own personal harem... The stepmom and stepdaughter see new sides of each other, playing with sex toys, double titty-fucking, and getting creampied. There's an insatiable monster in the house!