Kuroki, Tsukino, and Nishino are three modest, busty apartment wives who usually hide their sexual desires and live modest lives. One day, they receive a warning from Akakura, a sex maniac who lives next door, who says, "Don't be bound by common sense, destroy your sense of chastity." The three frustrated apartment wives make up their minds and use their big breasts as bait to devour men while their husbands are away!