Director Ivan Reitman (GHOSTBUSTERS, STRIPES, DAVE) turns from ghosts to aliens in this comedy starring David Duchovny, Orlando Jones, and Julianne Moore. When a meteor crashes into the Arizona desert, local community college professors Ira Kane (Duchovny) and Harry Block (Jones) are shocked to discover that it has introduced rapidly evolving aliens to Earth. Although the professors try to keep their discovery a secret, the U.S. military takes over the investigation, sealing off the fantastic creatures and the environment that the aliens have established. But when aliens start popping up on nearby golf courses and in the local mall, it's up to Kane and Block to save the world. With a little help from Allison Reed (Julianne Moore), a clumsy scientist with the Center for Disease Control, and Wayne Green (Seann William Scott), a dim-witted country club pool manager and fireman-wannabe, the two professors devise a plan using an unlikely weapon to kill the alien population before it wipes out the human race. Fittingly, former Ghostbuster Dan Aykroyd appears as the governor of Arizona.