April- 2001- San Fernando Valley, CA... A pair of senseless homicides of young teenage high school females suddenly inundate the West Valley Devonshire Hills Major Crimes Unit. At the same time, the business place of a close friend of both Detective Len Morgan and former homicide Captain Elmer "Dutch" Ryan,, is shot up in an early morning drive-by shooting. Unbeknownst to Len Morgan, and angered Captain Ryan, with the assistance of an ex-con ally, take on the suspected shooters by "visiting" a New York City mobster covertly, while Len Morgan and the Major Crimes Unit team up in an attempt to deal with several suspects, hoping one of which could be the serial killer.