Ex-detective pimp Jung-ho is angry because his girls keep disappearing without clearing their debts. One night, he gets a call from a customer and sends Mi-jin. But when Mi-jin meets the customer, Jung-ho realizes the phone number of the customer matches that of the calls the missing girls got last. As something smells fishy, he searches for her. During his search, Jung-ho dents a car in the alley. When Jung-ho spots blood splattered on the driver’s shirt, he senses the man, Young-min, is the suspect. After an intense chase, Jung-ho finally catches Young-min. But because of Jung-ho’s pretense as a cop, they are both taken to the police station. At the station, he bluntly tells the policemen that he has killed the missing women, and the last girl, Mi-jin, may still be alive. As the police force is obsessed with a random search for corpses,Jung-ho is the only one who believes Mi-jin is still alive. With only 12 hours left to detain the serial killer without a warrant, Jung-ho’s hunt begins.