When a meteor shower rains down outside Los Angeles, Jonas and Lars head out to find a meteor and strike it rich. After recovering one, they start being stalked by terrordactyls, flying reptiles that launch a full-on assault on the city. Trying to survive, they go on the run with Candice, a bartender; Valerie, her sultry roommate; and Sampson, a brash ex-marine. They must become the unlikeliest of heroes and fight to take back Los Angeles and make the terrifying terrordactyls extinct once again.