Three years after their marriage, Nao and Yusuke were happily living in a low-rise apartment. One day, Nao is invited to a party by Watanabe, who lives on a higher floor. Yusuke is reluctant to go, but Nao, who has some aspirations for a wealthy life, secretly joins the party on a day when Yusuke is coming home late... They share the same apartment, but in a “high-class” room with a completely different view and size, and over drinks, Nao allows herself to be seduced by Watanabe, and even has sex with him.... I'll give you anything you want,” she says. I'll give you anything you want, so get your pussy out and get pregnant with my baby.” A luxurious room, a gift, and sex of the highest caliber.... At first she hesitates, but the high-class men take her mind and body, and she becomes a slave who begs them to cum inside her....