Isaiah Reed (Fishburne) hands the keys to his criminal down to Marcus (Waddell). But it was a decision both came to regret, as his now-former clique attempted to kill father and son. They failed, and Marcus exacted vengeance. His mentor, Lt. Terrence Higgins (Rourke), opts to leave him alone if he joins the NYPD. Five years later, he has become part of the department's Street Crime Unit (SCU). But during a police beat, Higgins dies in an explosion. Now, with the help of his boss (Hargitay) and a mysterious detective (Walken), he needs to find out what happened, whether he walks the straight line of the law or not.