An armada of alien ships attacked Earth by surprise, destroying our traditional armed forces. Fortunately, the major countries have quickly coalesced to create an experimental defense project able to effectively fight against the invaders. You are one of the few elite soldiers, sent on a space station orbiting the Earth, and the survival of our planet depends on you! Equipped with advanced weapons and assisted by latest generation robots, you'll have to show all your shooting skills to hope to counter the alien threat.
