Yuki Seijo married into a family with three sons as a second wife. Although she is a stepmother, she is a beautiful woman who suddenly finds herself living with them. It doesn't take long for her adolescent sons to be overcome with sexual urges, and they gradually begin to desire Yuki. As she is used as a sexual toy by her stepsons every day, Yuki gradually awakens to pleasure... This is a full-scale night-time drama starring Yuki Kiyoshiro as a beautiful mature wife who moans with pleasure while suppressing her voice beside her sleeping husband!