The father goes off to a new woman, while the mother is a beautiful woman who likes men. One day, the son's friend approaches her and she is seduced by his erect penis, which she has not seen in a long time. Unable to resist, the mother pretends to sleep in her son's room. The son is excited by his mother's defenseless body, and just as the mother had planned, the two enter into a forbidden relationship. Once she had given permission, she also begins a relationship with the brother, and the mother and sons fall into the path of beasts, driven by their uncontrollable desires.