After mugging an old man, street punks Musante and Sheen wander off to the subway in search of cheap kicks. There they hold hostage a carload of 16 people. The punks intimidate the members of the group one by one, taunting them and exposing each passenger's weakness. Among the characters
are a homosexual (Fields), an elderly Jewish couple (Gilford and Ritter), an alcoholic trying to recover (Merrill), and an angry black man (Peters) who enjoys seeing the whites taunted, but reacts much like them when Musante and Sheen attack him. Unable to take any more of the torture, Army
private Bridges uses the cast on his broken arm to fight back. He is stabbed but manages to ...