Chicago policeman Terry McCain is determined to put away mobster Sal DiMarco, who always gets acquitted on technicalities. While monitoring a drug sale, a shootout ensues, and one of Terry's fellow officers gets away with $3 million of Sal's money. Suspecting Terry took the cash, the mobster sends his men to kill Terry's brother, Dylan, and partner, Frankie Hawkins. Furious, Terry sets out to take his revenge by any means necessary..