Americans on vacation in the Caribbean take a tour of a nearby island at night and watch a local voodoo ritual. Soon after, they find themselves stranded on the island and under attack by unseen foes. One by one they meet violent ends.

New York City factory worker Eddie Marino is a solid citizen and regular guy, until the day a sadistic street gang brutally assaults his wife and murders his child. When a corrupt judge sets the thugs free, he goes berserk and vows revenge.