Aoi, who married a man with divorce experience, will live together with her husband's father and son, making them four. The husband would bind his wife during nightlife activities, but to seek further excitement, he involved his father and son in sex, allowing the whole family to enjoy Aoi's massive breasts. Aoi, awakened to her innate masochistic tendencies through binding and humiliation, intensely feels as she takes in the three men's penises.
