Yukie (29) is in her third year of marriage. Her husband, also 29, changed jobs before they married and is now a busy salesman. Due to work-related stress, his sexual advances have decreased, and they haven't had sex in a year. One day, she discovers sleeping pills in his belongings and learns about his struggles with insomnia and erectile dysfunction. Shocked by her own unawareness, the married woman feels helpless, unable to find a way to improve his condition as time passes. Overwhelmed by anxiety and desperation, she decides to turn to a stranger for help.