Hinata and her husband both want sex, but his demanding work schedule keeps them from finding the time. After he leaves one day, her father-in-law suddenly visits. Having overheard the couple discussing their sexless marriage, he exposes his cock and offers to take care of her himself. Hinata hates him, angrily refuses, and throws him out. Yet she cannot forget the size of his cock and later masturbates while thinking about it. She clings to the hope that her husband Shinji will finally satisfy her on his day off tomorrow, unaware of where that desire will lead.