When some drug dealers in Camden, New Jersey get blown away by a smooth operator who's impersonating a cop, the case falls to two bleary-eyed, wisecracking police vets. But before they can even begin, an FBI team swoops in, headed by bossy and humourless Roger Sorenson. He identifies the perp as James Sullivan, an attorney who dropped out of sight a few years ago and has been taking out criminals ever since. In bits and pieces, it's revealed that Sullivan's vigilantism stems from criminal activity of his former colleague Dennis O'Brien, whom Sullivan blames for the death of his wife.