In the treacherous and shadowy corridors of organized crime, an undercover police officer finds his loyalties stretched to the breaking point. Lee Jung-jae stars as Ja-sung, a deep-cover operative who has spent years infiltrating the powerful Goldmoon corporation, a criminal syndicate masquerading as a legitimate business. His precarious existence is thrown into chaos following the sudden death of the group's chairman, sparking a brutal and paranoid power struggle between the volatile heir apparent, Jung Chung, played by Hwang Jung-min, and the ruthless, strategic director Jo, portrayed by Choi Min-sik. As his police handler, Chief Kang (Choi Il-hwa), pushes him to secure evidence in the escalating war, Ja-sung is forced to navigate a lethal game of triple-cross where every ally could be an enemy and every order could be a death sentence. Directed by Park Hoon-jung, this gripping thriller plunges into a world of tense boardroom confrontations and violent street clashes, crafting a relentless atmosphere of suspicion where the line between cop and criminal dissolves.