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 murderous 18-wheelers. The frightened people set out to defeat the killer machines…Or be killed by them.

Two truckers hired to transport toxic waste across the country get caught up with a teen genius who stows away on their truck.