Noriko's son, Takahiro, is a sex monster who thinks of nothing but ejaculation whenever he has free time. When he loses his senses, Noriko is troubled by her son's behavior, which leads him to see even his mother as a sexual object. While walking, holding her head in her hands, she bumps into her son's childhood friend, Moka. When she consults Moka, a well-known slut in the local area, about her son, Moka, worried about Takahiro, offers to satisfy his sexual needs.