North Korean detective Lim Zolling, who was sent to the south in order to hunt down a cruel and sophisticated criminal organization, South Korean detective Kang Jintae, who asked to be his partner in order to return to university, and "Jack", a subordinate of 's FBI in the United States, gathered for their own purposes. The detectives who were together launched an unpredictable international joint pursuit operation.
In order to hunt down the international criminal organization hiding in South Korea, the North Korean criminal police Zheling ( Hyun Bin ornaments) put into a new joint search mission. The South Korean criminal policeman Jiang Zhentai ( Liu Haizhen ) was transferred to the Internet search team due to a mistake during the search. In order to return to the wide area search team, Zhentao volunteered to be Zheling's partner. Min-young (Lim Yoon-ah), who meets Zhe-ling again, rekindles her love for him. However, Zheling and Zhentae are suspicious of each other, but still carry out a very decent search operation. Just when they finally found the hiding place of Zhang Mingjun (Chen Shangui), the head of the criminal organization, FBI agent Jack (Daniel Haney) from the United States suddenly appeared in front of them, the still poignant Korean detective. The same outstanding North Korean detectives; American detectives from the FBI, united by their respective goals, will launch an exciting joint search operation.
Three men in one play, not only cooperate with each other, but also have different ideas; it is full of friendship, but also full of crisis. Zheling is handsome, quick-witted and meticulous, and deeply hidden in the feelings of family and country, the love of sons and daughters that is difficult to detect, and the contradictions are just right. Tae Jin is a humorous, new good man who takes care of his family and business and loves his wife and son. He is brave in taking on the challenge in times of crisis. Jack is all-around, not only can play the domineering muscular man, but also frequently acts as the funny person in the trio, which is the icing on the cake.
