Three plain-looking married women in apartment complexes with big breasts live modestly while hiding their sexual desire. One day, they receive advice from Akakura, who lives in the neighboring room, "Don't be bound by common sense, break down your chastity concept!" The three married women in the apartment complex, who are feeling uneasy, decide to make up their minds and use their proud big breasts as bait to devour men while their husbands are away!