1986 Gyunggi Province. The body of a young lady is found ruthlessly assaulted and killed. After two months, a progression of assaults and murders starts under comparative conditions. Furthermore, in a nation that had never known such violations, the dim murmurs regarding a sequential killer become more intense. An uncommon team is set up in the region, with two nearby analysts Park Doo-Man and Jo Young-Goo joined by an investigator from Seoul who mentioned to be appointed to the case.