2031: the world's cities lie in ruin. Alien invaders
known as 'Heavies have mounted a devastating attack.
Mankind barely prevailed but enemy survivors remain
hidden amongst us as a new war on terror rages. In the
aftermath of the first contact war, a series of remote
operating bases are created to defend the planet. Three
Seven is the deadliest, positioned in the most hostile
place on Earth. Make no mistake it is hell.