Office worker Hiroko plans to murder a former classmate who is blackmailing her using her past. She plans and puts her perfect crime into action, but is struck by an unexpected turn of events. Hiroko, who works at a credit union, has a past in which she embezzled 10 million yen from the company to give to a man. She has been secretly paying it back and is finally just six months away from paying it all back. Just when she is happy to be proposed to by pharmacy owner Nozawa, her high school friend Kyoko blackmails her for 10 million yen. In fact, Kyoko is the mastermind behind the man who extorted money from Hiroko. She has gone from being an actress to a club madam and is in trouble with the debts of her club. Hiroko decides to kill Kyoko, who will stop at nothing to kill her...