This film opens with Treasury officer Jimmy Mercer (Wesley Snipes) and his partner Brady (Dan Hedaya) doing some undercover work, when Mercer's fellow agent is shot and killed by a new man, Ronnie (Viggo Mortensen) that criminal Red Diamond (Dennis Hopper) pulled out of jail. Now on a snap of anger and thoughts of revenge, Mercer wants to find the killer and take him down before he gets transferred to Newark. Although a cop and close colleague claims over dinner that Mercer must do it "by the book," Mercer replies that "when I'm done with this motherfucker, I'm gonna put him in a box..... by the book."