The Matsumotos have tried regularly to conceive since marrying, but no child has come. They visit a hospital to see whether either of them has a physical problem, yet no direct cause is found. The doctor suggests that the husband's sexual performance may be responsible. Around that time, the neighborhood association chairman invites Riho to a meeting, where she is subjected to humiliation disguised as fertility treatment. The intense pleasure she never found in her dull sex life with her husband begins to overwhelm both her mind and body...