One year after remarriage, Rieko, an obedient wife in front of her husband Tatsuo. However, Tatsuo doesn't like her son Kenta. He was conscious of Rieko not as her mother, but as a woman, and often secretly let out her excess libido while she was sleeping. Rieko pretends not to know it even though she notices it. But she feels so sorry for his brave act that she ends up having a relationship with him. Her mother and child, even though they know it's a forbidden act, their fierce desires don't know where to stop.
