While her husband is away on a business trip, Rei's brother-in-law, Makoto, suddenly visits her. Rei is suspicious of her brother-in-law's unusual behavior. Makoto then speaks with a guilty look on his face. "Money..." Makoto had borrowed a huge sum of 5 million yen from a lender with high interest rates. Rei heads to the lender to talk to him first. It turns out that Rei ends up working in Makoto's place at the bar run by the man. It's a prostitution bar selling obscene acts... And with no way to escape, Rei is toyed with by the customers. She has no idea that it's all been planned...