His young and beautiful wife Kanako remarried, and her husband Shinji lived a happy life. At first glance, the family seemed happy, but there was actually a big secret. At the beginning of her remarriage, when her husband's work was extremely busy, he tended to be absent on business trips. Kanako, unable to endure loneliness, made a mistake with her son-in-law, Atsushi. And it should have been a one-time promise, but my son came to want Kanako's body all the time.