For years, there have been documented cases of UFO sightings around the world. But in 2011, what were once just sightings will become a terrifying reality when Earth is attacked by unknown forces. As people everywhere watch the world's great cities fall, Los Angeles becomes the last stand for mankind in a battle no one expected. It's up to a Marine staff sergeant and his new platoon to draw a line in the sand as they take on an enemy unlike any they've ever encountered before.

Originally released as a motion picture. Special features include: Behind the battle; Aliens in L.A.; Preparing for battle; Creating L.A. in LA. MDA rating: PG-13.