A kidnap shocked Thailand. Learned that the case was related to himself, the assassin In-nam (Hwang Jung Min) who had made his last kill, goes to Thailand immediately and begins his investigation. In the meantime, Ray (Lee Jung-jae) who found out that his brother’s murderer was In-nam goes to Thailand for revenge. The tragic assassin and the heartless pursuer engage in a cruel war....

According to the report, a large number of guns have been smuggled into Korea and a new agent, Yoo Da-hee is sent there. Although she had met a "top" agent from the NIS who offered help, his on-site investigation was very flawed and the two started to argue. However, those they have met in order to find clues were all killed and they suddenly became suspects. Facing the uncontrollable crisis, they overcome the difficulties together....

The boss of the largest crime syndicate in Gangneung City, South Korea, plans to build the largest resort in Asia. His most trusted subordinate Gil-seok (played by Yoo Oh Seong) lives a comfortable life, performs the tasks of the boss every day, and is loyal to him. Min Seok (played by Jang Hyuk) is a young gang boss from Seoul with brains and ambitions. He decides to switch to a tourism business and build his own influence. Min Seok obtained the resort through various violent and fraudulent means, which put Gil-seok’s gang in danger, so Gil-seok decides to revenge......