Synopsis Im Chul-Ryung (Hyun-Bin) is an officer of a special investigation team in North Korea. His team goes to a disturbance at a warehouse that prints counterfeit money. Im Chul-Ryung’s superior Cha Ki-Sung (Kim Ju-Hyeok) and his own team are there to steal the master plates to print the counterfeit money. A shootout takes place and, in the process, Im Chul-Ryung is shot and others killed.
North Korean officials later learn that Cha Ki-Sung has fled to South Korea. Im Chul-Ryung is ordered to capture Cha Ki-Sung and retrieve the stolen master plates. He is given only 3 days to complete his mission. For the first time, South Korea and North Korea decide to cooperate to catch a criminal. South Korean officials though have doubts whether Cha Ki-Sung is really a killer. Detective Kang Jin-Tae (Yu Hae-Jin) from Seoul is ordered to watch over Im Chul-Ryung tightly while he is in South Korea.