The mindless murderer Maniac Harry has massacred all but three riders on New York's automated subway train. Can hapless straphanger Gabriella keep one step ahead of Harry, while still protecting the newly orphaned twins she's taken under her wing? Can our heroes Gi-na Greene and Detective Zelda Pettibone jump onboard the runaway train and find the survivors before Harry slaughters them? Plus, finally learn what life-altering mistake got Zelda trapped on the Maniac beat!
