During a holiday, Taku visits his adult son and daughter-in-law, and the family enjoys some time together. But Azusa has grown distant from her husband, their sex life has nearly disappeared, and her frustration keeps building. When she confides in Taku, alcohol lowers their inhibitions and she gives herself to her father-in-law. The next morning, Taku insists they should forget what happened, but Azusa cannot suppress the desire awakened by his lingering caresses—the kind her husband never gives her.