This is a Netflix crime action film that revolves around detective Won Hao (played by Jo Jin-woong) who is still hunting Mr. Lee, the missing Le (played by Oh Seung-hoon), the reappearing Brian (played by Cha Seung-won), and Da Dao (played by Han Hyo-joo) who came from China to solve the problem, and tells the story of the deadly war between them.