Sheldon Bart (Fred Ward) is a drifter, and a small-time con man. He meets his old friend, Brother Bud (Harry Dean Stanton), a big-time con man into faith healing and fencing stolen cars, at his revival tent outside a small town. While he's helping Brother Bud, he falls in love with Arlene (Cindy Williams), a local supermarket clerk who believes in UFOs and is deeply religious and deeply lonely. When Arlene has a vision of a coming UFO, everyone deals with it in their own way.