Naho spends her days frustrated with her husband and her age gap in marriage. One day, her daughter and her husband came to visit her house. In her single-mother household, the son-in-law, who is a mother's son, is not only attracted to her gentle mother-in-law Naho, but she is lustful for her plump big breasts. That night, her son-in-law, who was supposed to take care of her drunken Naho, could not stand her defenseless mother-in-law.
