A 100 percent true story about criminal investigation, which has never been revealed before, unfolds and lays actual incidents bare, from receiving the initial reports to apprehending the suspects. This documentary depicts the intense lives of the detectives who work 24/7 at the Violent Crimes Unit at the National Office of Investigation of the Korean National Police Agency, which is an organization in charge of all police work. Shocking crimes, from murders to suspicious deaths, drugs, and sexual offenses, come to the surface. The terrifying aspects of numerous and various crimes, which have been collected all around the country, will be laid bare. We invite you to see the endings of the incidents we have unraveled ourselves through hands-on work.