At her new apartment building, a young man next door starts getting intimate with a pregnant, horny housewife. Expecting her husband to be excited about her pregnancy, Ayumi is disappointed by his indifference. Unable to contain her excitement, she tempts the young man next door without her bra, planning to get pregnant with him instead of her husband. After confirming their blood types and fertile days, the horny housewife engages in a risky affair with the young man, aiming for implantation.