Giant worms begin terrorizing Perfection, Nevada. The humans find out that they can't see but find their way around using their sense of hearing. They are called Graboids. One of them bursts into Burt's basement and Burt blasts it full of holes with various guns and finally kills it with the Elephant Gun. Val takes the CAT Bulldozer with a trailer full of people toward mountains. The graboids dig a trap and they all fall in. Burt throws TNT and runs for some rocks. While there the throw rocks and some TNT onto a patch of ground. The graboid eats it.