One year after remarriage, Satoeko, an obedient wife in front of her husband, Tatsuo. However, her son Kenta doesn't seem to like Tatsuo ... Recognizing Rieko as a woman rather than her mother, he often sneaked her excess libido by her sleeping side. Rieko pretends to be unfamiliar while she notices it. But she feels so pitiful about his sane deeds that she finally has her relationship. Her mother and child, knowing that it is a forbidden act, but the desire to be fierce never stops ...