Having lost her husband at an early age, Hisae spends lonely, painful nights longing for intimacy. To ease her loneliness, she recalls her nights with her late husband and finds comfort in masturbation. Yet her unsatisfied desires grow stronger each day, driving her to seek new pleasures. Taking advantage of her daughter's hospitalization for childbirth, she decides to seduce her son-in-law, engage in a forbidden relationship, and steal him away from her own daughter. Unable to prioritize guilt over her own pleasure, the widow Hisae gives in to lustful, adulterous acts. This story portrays her inner battle between dark desires and overwhelming guilt.