Inspector Chae Edo is appointed to investigate a brutal serial murder case and immediately identifies a rich North Korean defector named Kim Gwang-il as the prime suspect. But Edo's hands are tied when he finds out that his own government is protecting the suspect. Backed by the CIA, National Intelligence Services agent Jae-hyuk is assigned to interfere with police investigation of Gwang-il. Despite having indisputable evidence against him, Edo is forced to release the suspec...more

Inspector Chae Edo is appointed to investigate a brutal serial murder case and immediately identifies a rich North Korean defector named Kim Gwang-il as the prime suspect. But Edo's hands are tied when he finds out that his own government is protecting the suspect. Backed by the CIA, National Intelligence Services agent Jae-hyuk is assigned to interfere with police investigation of Gwang-il. Despite having indisputable evidence against him, Edo is forced to release the suspect and is suspended for doing his job. Yet, North Korean officer Lee Dae-bum appears before him and proposes a joint investigation to capture the serial killer by any means necessary.less