When a meteorite crashes near a small town, it brings with it a creeping slug-like parasite that quickly inhabits wealthy resident Grant Grant (Michael Rooker). As Grant undergoes a gruesome transformation and the creatures begin to multiply, it's up to his young trophy wife (Elizabeth Banks) and the local sheriff (Nathan Fillion) to stop the beasties before they take over the town. Skin-crawling blend of horror and comedy also stars Gregg Henry, Tania Saulnier.