Married woman Masami (38 years old). Five years into her second marriage, she lives with her two children from her previous marriage, making a family of four. In her youth, she impulsively married and was blessed with children, enjoying a happy life. However, her first husband repeatedly cheated, ignoring her feelings, driving her to emotional despair, leading to divorce after eight years. She moved with her young children into a cheap apartment, working day and night, tirelessly striving for their sake. Though her current family relationship is stable, deep inside, she still holds onto new hopes. Wanting to shine once more as a woman, she embarks on a two-day, one-night trip to reevaluate her relationship with her husband. Her encounter with a man she's never met before turns into a night of forbidden passion. A married woman burdened with inner struggles, through 24-hour closeness, gradually frees her mind and body, experiencing new emotions. This journey becomes a major turning point in her life.