Married for ten years, Yuko's husband works in a different city, so they only meet a few times a month. To cope with her loneliness, she throws herself into her work. One day, she invites her subordinate, Honda, to dinner to comfort him after he makes a mistake. Drunk and lamenting her husband's absence, Yuko realizes Honda's feelings and gives in to him. Afterwards, the two continue their affair, meeting secretly in the office on weekends. However, their forbidden relationship as superior and subordinate is exposed, subjecting Yuko to intense humiliation.