Reiko, a mother who was worried about her daughter returning home after having had a fight with her husband, went to bed for a while at the couple's house. One day... it was when Reiko was taking a bath. The wrong son-in-law and Reiko, who mistakenly opened the door and took a bath, met each other naked, and an awkward air flowed. And that night ... Reiko remembered Yoshibushi and was self-consolation, and Yoshiburo also knocked on the room of Reiko because he couldn't forget his mother-in-law's jealousy.