The Inoue family seems to lead an ordinary life, but wife Ayako and her only son Tetsuro share a secret they can't tell anyone. The secret... is that they have fallen into an incestuous relationship. Although they say they want to cut it off, their bodies are drawn to each other and can't be separated. Worse yet, they become addicted to the pleasure of having sex in the husband's immediate vicinity where it must never be found out. And today too, the silent intercourse intensifies...
