In the first part, the older sister brings her boyfriend home and the younger sister gets jealous of her older sister's lovey-dovey behavior in front of the younger sister, so she takes advantage of the fact that the older sister has finished sex and fallen asleep and seduces the boyfriend herself. In the second part, the younger sister, who was listening to her older sister's sex from under the bed, gets turned on and starts masturbating. When the older sister's boyfriend notices and the older sister goes to take a shower, he has sex with the boyfriend. Two intense and sexy bed stories begin.