Gabriel Caine has just been released from prison when he sets up a bet with a business man. The business man owns most of a boxing-mad town called Diggstown. The bet is that Gabe can find a boxer that will knock out 10 Diggstown men, in a boxing ring, within 24 hours. “Honey” Roy Palmer is that man – although at 48, many say he is too old.

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.