A stranger visits Ayumi, a wife of three years. It turns out that the man is a loan shark, and he has come because Ayumi's ex-boyfriend defaulted on his debt and Ayumi was the guarantor. Ayumi is at a loss when she sees the huge amount of money to pay back, and the man encourages her to work in the sex industry, but she cannot betray her husband, and the jealous man calls her home frequently. The man tells her that she should just do it at home, but...