chunk: The year is 1991; one year since an unidentified flying object bearing 300,000 enslaved aliens, the Newcomers, landed in the Mojave Desert on planet Earth. Los Angeles later becomes their new home. Matthew Sykes (Caan), a police detective, loses his partner Bill Tuggle (Brown) in a shootout. The detectives were trying to stop two Newcomer criminals murdering another Newcomer named Porter at a grocery, in what appeared to be a robbery.
  The next day, Sykes' superior Captain Warner (McCarthy), informs his squad that they will have to work with the newly promoted Newcomer detective Sam Francisco (Patinkin). Although biased, Sykes enlists to work with Francisco to investigate a similar homicide with a Newcomer named Warren Hubely; feeling that if he investigates that crime, he will also find opportunities to investigate his partner's death which he is officially forbidden to do.