In 2010, South Koreans are terrified by a series of murders targeting children. The police fail repeatedly to capture the killer. Finally, the Korean President becomes directly involved in the case. The cops, feeling pressure from all sides, pursue a possible suspect, but the suspect is shot to death by the cops. To avoid another dead end and any further heat, the National Police Agency wants to target another person, any plausible person, and close the case as soon as possible.
Police officer Choi Cheol-Gi is then chosen to do the dirty work. Police officer Choi Cheol-Gi is well respected by his peers and has an impressive resume of arrests, but due to the fact that Choi Chil-Gi did not graduate from the police academy he is always passed over for promotions. This time around, the police brass guarantees a promotion if he is able to close the case.
Choi Cheol-Gi then enlists the help of gangster Jang Suk-Gu to frame a possible suspect as the serial killer.
Meanwhile, prosecutor Joo-Yang is assigned to the arrest of the serial killer. He has also take on sponsorship by a powerful real estate businessman. When police officer Choi Cheol-Gi attempts to arrest Joo-Yang's sponsor, prosecutor Joo-Yang looks into Choi Cheol-Gi background to exact revenge. He hits paydirt when he comes across a deal between Choi Cheol-Gi and gangster Jang Suk-Gu.
During this time, the man imprisoned as the serial killer dies in an apparent suicide..
