A married woman, Lina, who has moved next to a ronin who studies day and night. Lina, who is frustrated with her sex life with her husband, goes up to the ronin's house and seduces him and eats him up. Furthermore, when her husband goes on a business trip, Lina's runaway accelerates. In the middle of an affair with a man when called by Lina late at night. Before long, men and women's lewd dementia become entangled.