Reiko married into the Nakamori family as the fourth wife of Shigeo, a womanizer with extraordinary sexual prowess. Just two months after their marriage, Shigeo suddenly passed away, leaving Reiko to raise her seven step-sons on her own. Every day, she was busy cooking, doing the laundry, and cleaning, and in her free time, she would masturbate while thinking about her late husband. Her sons, unaware of their mother's struggles, unleash their sexual desires on Reiko...