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 becomes a terrifying reality when Earth is
attacked by unknown forces. As people everywhere watch as the world's
great cities fall, there remains one place that becomes the last stand
for mankind in a battle no one expected. It's up to your team to draw a
line in the sand and take on an enemy unlike any ever encountered
before.