Glen Lerolland and his family are on a trip from Wisconsin to San Diego. When they have some car trouble, Glen's son Rich is almost run over by a maniac. Glen confronts the deranged Cliff at the next rest stop, which ends in a game of chicken and Glen's fiery death. Glen's brother Jack gets a baseball bat to the head and is left for dead. Now it is up to Jack to save his family from Cliff and his band of crazy men.