A certain apartment located in Tokyo is a special place inhabited solely by young married women. The strict condition for residency is that men must be virgins. Any man who loses his virginity is destined to be expelled from the apartment. This time, a new virgin man has arrived at the apartment. The young wives warmly embrace him, but within their affection lies a sweet, seductive force that gradually strips him of his virginity. The kindness and hidden malice of the women surrounding him become increasingly entangled, shaking his heart to its core.