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.
Rancher Cole Hillman is fed up of rabbits plaguing his fields. Zoologist Roy Bennett conducts an experiment to curb their population, but it gives rise to giant rabbits that terrorise the town.