Reina, a young wife living a happy but modest life with her kind husband. One day, a man named Nakata moves into the neighborhood. Nakata, who claims to be a jeweler, offers Reina a ring at a very low price. However, the proposal was a heinous trap! With his skillful speech, he gets Reina to sign a contract and demands a high price. Nakata, confusing Reina, opens a 'dark prostitution' business using her home as a shop, and forces her to sell her body to the despicable men living in the underworld...
