Horror based on the short story by Stephen King. Alan Parker (Jonathan Jackson) is an art student at the University of Maine in 1969. Cursed with an over-active imagination, Alan constantly obsesses over the worst outcome of any situation, and when he begins to suspect his girlfriend Jessica (Erika Christensen) is thinking of leaving him, it drives him to the brink of suicide. Shortly after this brush with death, Alan receives word that his mother Jean (Barbara Hershey) has suffered a severe stroke and may not pull through. Alan grabs his jacket and hits the road, hoping to hitchhike the 100 miles to the hospital. As it happens, Alan is trying to catch a ride on Halloween night, and, after he's picked up by one George Staub (David Arquette), he realises that he's riding the highway with a creature not of this Earth.