After 18 years of marriage, Reiko's relationship with her husband, who neglects his family because of his work, has become cold. One day, her son gets into trouble at school, and when she goes to her husband for advice, he doesn't listen. At a loss, her son's teacher, Ozawa, becomes sympathetic to her, and before she knows it, she begins to be attracted to him... Then, Reiko finds out that her husband has been cheating on her, and she is exhausted both physically and mentally. She can't bear it any more, and clings to Ozawa's kindness. As she is comforted by his warmth and tolerance, which makes her forget the pain of everyday life, before she knows it...