Sung-Bum (Uhm Tae-Woong) is a hot-tempered detective who relies on his intuition to crack cases. He rarely comes across a case that he cannot solve. The body of a police officer is then discovered in a burned out car near an abandoned building. Drugs are also found near the dead officer. To catch the killer the police department sets up a special investigation unit for the case. Sung-Bum takes part in the investigation. Ho-Ryong (Joo Won) is a young, confident man who works as a criminal profiler. He trained with the F.B.I. in the United States. Ho-Ryong is also assigned to the special investigation unit. Ho-Ryong relies on evidence rather than instinct. Detective Sung-Bum takes an immediate dislike for Ho-Ryong.

Sin-ae moves with her son Jun to Miryang, the town where her dead husband was born. As she tries to come to herself and set out on new foundations, another tragic event overturns her life.