To see off her son who is going to study abroad, mother Aoi invites her son's friends Kawada and Kohashi to stay overnight. Late at night, Kohashi senses someone's presence and peeks into the bedroom, only to find Aoi and Kawada getting intimate. He impulsively threatens to tell her son and gets entangled with Aoi and his friends in a struggle of desires. Initially, Aoi resists, but her forgotten female desires are ignited, and she succumbs to the young bodies.
