"Kuriko" is an ordinary housewife living peacefully with her husband, daughter, and son-in-law Hiroaki. Her tranquil daily life is Kuriko's treasure. One day, Kuriko impulsively commits adultery with a young man from her part-time job and is caught by Hiroaki. As Kuriko begs him to keep it a secret, Hiroaki's sadistic tendencies are aroused, and he grabs Kuriko's massive breasts. The two of them become engulfed in forbidden pleasure―.
