His mother serves his alcoholic father without resisting him. He wonders why she endures it. One night, the son notices the light coming from his parents' room and peeks into the bedroom, where he sees his mother giving him oral sex as instructed by his father. However, he loses his erection before penetration, so his father goes out drinking alone. His mother then begins to comfort her hot body by herself. The next day, while everyone else is out, the son notices his mother napping and tries to cover her with a towel blanket, but he remembers seeing his mother masturbate the day before and becomes excited, so he starts to play with her body. When the mother wakes up, she tries to reject her son, but to no avail, and he is forced to penetrate her...