Aya Niizuma who remarried and started a new life with her husband and son-in-law. Her husband asks for Aya's body every night and blames her for her perverted play ... Shinpei, a son who lives together, becomes conscious of her mother-in-law Aya as a woman in such a sight of her father and mother-in-law. One day, she peeped into Aya's bath and masturbated on the spot.
