When Ko Jung-Woo (Byun Yo-Han) was 19 years old, he was a high school student in Muchon Twon and about to enter a prestigious medical school. But, Ko Jung-Woo was arrested for murdering two female classmates. Ko Jung-Woo could not remember if he committed the murders or not and the dead bodies were never found. After serving 10 years in prison, Ko Jung-Woo returns to his hometown. He decides to leave the area for good and start a new life, but a series of strange things happen around him. He is unable to leave because of this. Somehow, Ko Jung-Woo gets involved with Detective No Sang-Cheol (Ko Jun) and they try to uncover the truth of what happened on the day when the two girls were murdered. No Sang-Cheol was an elite detective, who graduated at the top of the police university. But, on his wedding, his bride was brutally murdered. His life completely changed afterwards and his career was ruined. He was then demoted to the police station in Muchon Town. Due to an incident, he begins to reinvestigate Ko Jung-Woo’s case.