Having an affair with her husband's younger brother, she wants to end the relationship but is threatened that he'll tell her husband, leaving her unable to refuse. When her husband is away, she's forced to masturbate, and even when the three of them are together, she's secretly toyed with using sex toys. To protect her beloved husband and her home, she obeys his every demand. Trapped in this situation, how can she possibly escape? Torn between inner turmoil and overwhelming reality, she struggles to decide what to do about their relationship.