Bruno Johnson, a young and inexperienced LA County deputy sheriff, is trying to balance his life as the single father of a four-year-old daughter and his responsibilities as a cop in the Violent Crimes Unit. When he and his impetuous partner, Ned Kiefer, are put on loan to the FBI to help out with a "special problem", Bruno finds himself in a real bind.
The FBI hands Bruno and Ned a case that the Bureau prefers not to touch - a group of teenage criminals that are being run by a nefarious criminal known as the Darkman. Bruno discovers the identity of the Darkman and is stunned to realize that he is the perpetrator from a lingering unsolved case - a triple homicide that continues to haunt Bruno.
The problem is how to stop the juvenile criminals without killing kids and, at the same time, avoid being killed by the kids - or by the Darkman - and keep his reckless partner Ned under control.