Washed-up New York City detective Jack Mosley is chosen to escort prisoner Eddie Bunker sixteen blocks away to court, where Bunker is scheduled to testify. Along the way, however, Mosley learns that Bunker has made a deal with the district attorney to testify against his colleagues, setting off a vendetta on the part of the NYPD. Mosley must choose between protecting a witness and his allegiance to his department.