Mr. and Mrs. Shinozaki lead a modest and happy life despite their financial difficulties.One day, Nakata, who claims to be a financial product intermediary, comes to visit.Kanna, who has never had a single luxury, is fascinated by her profitable story introduced by Nakata.But the story was a trap to make her Kanna fall for her obscene act.Nakata, who forced her to sign a forged purchase contract, turns her into a secret prostitute who makes her "own house her management place" instead of making her pay... ….