“How much would you pay for me?” Reina Kirigamine, a charming and serious young woman like few others. In order to ease the burden on her mother, Miho, who has raised her alone, decides to earn some money on her own and consults a friend. Through a dating site, recommended as a quick method, she has her first contact. Willing to negotiate, Reina is soon overwhelmed by sweet words and promises of more earnings, crumbling under the pressure. What began as showing her underwear in the bathrooms of a park became the basis for something darker.