The Shinzaki couple, though economically struggling, were living a modest yet happy life. One day, a man named Nakata, who claimed to be a financial product intermediary, visited them. Kan'na, who had never indulged in any luxuries, was drawn to the money-making scheme that Nakata introduced. However, that scheme was a trap designed to lead Kan'na into lewd acts. After making her sign a forged purchase contract, Nakata, instead of demanding payment, turned Kan'na into an underground prostitute operating out of 'her own home'…
