Aya, a wife of two years, is troubled by her husband's devotion to work and neglect of his family. Ozawa, Aya's boss and a close family friend, is concerned about Aya and her husband's situation and suggests a trip to a hot spring. However, on the day of the trip, Aya's husband is unable to attend due to work reasons, so Aya, the Ozawas and their husbands head off together. Overwhelmed by grief, Aya becomes drunk at the bar attached to the inn. She clings to Ozawa, who takes care of her, and, drunk and lonely, she desires his body. Though he is confused, Ozawa accepts Aya and the two become immersed in an intimate, passionate affair...