Donny (O'Shea Jackson Jr.), the mastermind of a banknote robbery, comes to Europe and is involved in a dangerous diamond theft. He hooks up with the notorious gangster "Black Panther" and plans a robbery with the world's largest diamond exchange as his target. Detective Nick (Gerard Butler), who failed to intercept Donny, falls into a low ebb in his life. He wants revenge and comes to Europe to find Donny, but he didn't expect that he would become the target of other forces. He must join forces with Donny to launch a high-risk action of fighting wits and strength.