In order to pursue international criminal organizations hiding in South Korea, North Korean detective Ren Tieling (played by Hyun Bin) has launched a new joint search mission. However, South Korean detective Jiang Zhentai (played by Liu Haizhen) was transferred to the online search team due to an error during the search. In order to return to the wide area search team, Zhentai voluntarily became a partner of Tie Ling. again
In order to pursue international criminal organizations hiding in South Korea, North Korean detective Ren Tieling (played by Hyun Bin) has launched a new joint search mission. However, South Korean detective Jiang Zhentai (played by Liu Haizhen) was transferred to the online search team due to an error during the search. In order to return to the wide area search team, Zhentai voluntarily became a partner of Tie Ling. again