Story of a woman who “lends” her womb for ten million Yen to a couple unable to have children.

Murayama, a diligent businessman, is 25 years old and still a virgin. His boss invites him to a bar where he is introduced to a new woman. His boss warns him, "She's a professional, don't get too serious," but he continues to frequent the bar and gets sucked deeper into it. He has no idea that the woman is being kept by an S&M man...