A forbidden love story between Chiharu, a mother in her fifties who is treated like a servant by her husband, and her son who feels sorry for her. When her son decides to get married, Chiharu spends her days clutching his underwear and masturbating to ease her loneliness. On the very day her son leaves home to live with his fiancée, Chiharu, a mother, is unable to suppress the feelings she has been hiding in her heart and puts them into action. She seduces her beloved son...