My husband, who works for a trading company and is always on business trips, doesn't make love to Momoko's young, horny, erotic, and big-breasted body. Momoko, who is always so horny that she can't help it, starts asking her father-in-law to take care of her sexual needs. However, the landlord, who has noticed this incest within the family, decides to make Momoko's young, white, and voluptuous erotic body his own sex toy...