After returning home from the Vietnam War, veteran Jacob Singer struggles to maintain his sanity. Plagued by hallucinations and flashbacks, Singer rapidly falls apart as the world and people around him morph and twist into disturbing images. His girlfriend, Jezzie, and ex-wife, Sarah, try to help, but to little avail. Even Singer's chiropractor friend, Louis, fails to reach him as he descends into madness.
Megan Turner, a female rookie cop, gets involved in an armed robbery that goes awry. A witness becomes obsessed with her.
In a soon to be demolished block of apartments, the residents resist the criminal methods used to force them to leave so a greedy tycoon can build his new skyscraper. When tiny mechanical aliens land for a recharge, they decide to stay and help out.
Los Angeles teenager Ritchie Valens becomes an overnight rock 'n' roll success in 1958, thanks to a love ballad called "Donna" that he wrote for his girlfriend. But as his star rises, Valens has conflicts with his jealous brother, Bob, and becomes haunted by a recurring nightmare of a plane crash just as he begins his first national tour alongside Buddy Holly.
When Hong Kong Inspector Lee is summoned to Los Angeles to investigate a kidnapping, the FBI doesn't want any outside help and assigns cocky LAPD Detective James Carter to distract Lee from the case. Not content to watch the action from the sidelines, Lee and Carter form an unlikely partnership and investigate the case themselves.