Baek Dan-ha became Geumjang's daughter-in-law through an arranged marriage. One night, after listening to her brother-in-law Seomun Yoo-Seung's words, she went to the separate house—only to witness her husband's immoral acts. "Sister-in-law, don’t you want to get revenge on your husband?" Seomun Yoo-Seung quietly approaches her… after giving her such a strange suggestion.