For years, there have been documented cases of UFO sightings around the world – Buenos Aires, Seoul, France, Germany, China. 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 worlds great cities fall, Los Angeles becomes the last stand for mankind in a battle no one expected. Its 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 theyve ever encountered before.