The elder sister, Natsumi Kitahara, and the Azusa Kirihara, are two extremely lewd sisters. The two seek out erotic pleasure beyond measure, and even though they are married, they are lesbian sisters who desire each other's bodies. However, they also love their husbands' dicks. Their husbands, who are unaware of anything, get involved, and a huge orgy breaks out in the family, with the sisters and brothers going wild!!!