Yoshie Ishihara (50) has a husband who is away from home. Even though I can distract myself with masturbation, the pain in my body does not subside and I dabble in my son Tomoya. Shizuko Miyauchi (53) spends a happy time with her son Shuta, ignoring her husband who stays away from home. However, Shizuko's feelings backfire and she is tragically violated by Shuta. Two polar opposite mothers with forbidden secrets confide in each other's secrets and propose to do even more forbidden acts...