In the later 1960s, two hippies are forced to leave their friends as they are wanted by the FBI, who sees them as criminals. They hide in the jungle for 20 years, secluded from the outside world. In the later 1980s, the find out that a secret war is about to start in the US, and decide to return to New York to tell someone about it.
An intelligent pulse of electricity moves from house to thouse, terrorizing occupants through their own appliances. Having already destroyed one household in a quiet neighborhood, the pulse finds itself in the home of a boy and his divorced father.