Teenage Amy Harper, her boyfriend Buzz Dawson, and their friends Richie Atterbury and Liz Duncan visit a local carnival for a night of innocent amusement, but soon witness a fortune teller's murder and find that the exits are locked.
Five friends head out to rural Texas to visit the grave of a grandfather. On the way they stumble across what appears to be a deserted house, only to discover something sinister within. Something armed with a chainsaw.