When a comet passes close to the earth, machines all over the world come alive and go on homicidal rampages. A group of people at a desolate truck stop are held hostage by a gang of homicidal 18-wheelers. The frightened people set out to defeat the killer machines … or be killed by them.

An outlaw band flees a posse and rides into Refuge, a small town where no one carries a gun, drinks, or swears. The town is actually Purgatory, and the peaceful inhabitants are all famous dead outlaws and criminals such as Doc Holiday and Wild Bill Hickok who must redeem themselves before gaining admittance to Heaven…or screw up and go to Hell.