From the introduction:
Stop me if you’ve heard this one. In small-town America, isolated from the rest of the world, a horrible monster appears and starts eating people left and right, and there’s nothing anyone can do but run and hide as the bodies pile up. But as this is a horror/comedy the monsters are not immune to bullets, and there is a man here with more than enough gun to go around.
Welcome to Perfection, Nevada. Population: 15-ish? It’s a really small town. There’s a small shop, a ranch or two, and an only slightly crazy survivalist and his wife living in their own little bunker. Then people start dying, the only road out of the valley is closed off by a landslide (naturally) and the mad scramble for survival begins.
For reasons unknown, ancient underground predators have come out of hibernation and gone looking for food. Around thirty feet long, six around, with snakes for tongues strong enough to stall a truck and reaching 20mph in good soil, they hunt by sensing the vibrations of their prey before burrowing up to them for the kill. Let them live love enough, and you’ll have to deal with the nasty variations of the later stages of their life-cycle. And they are all very, very smart.
So grab your guns and homemade explosives, because you’re going to be dealing with Graboids, Shriekers, Assblasters and everything else this world will throw at you.