For years scientists had warned about the real possibility of a global strike from outer space: a global killer. Mathematicians had calculated that once in approximately every sixty million years the Earth has been hit by a meteorite of such proportions it drastically changes our climate, plunging the world into a decade of nuclear winters.In a post-apocalyptic world in which the sun has been replaced by near-darkness, the few remaining survivors have been forced underground to protect themselves from the evil predators that roam the surface above.Something else is out there, in the darkness, humanlike, but without a soul. Something that speaks intelligently, plans with cunning meticulousness and, just like its cousin, this new breed likes to hunt. Not the pitiful, scrawny livestock and wild animals that cling to life on the barren surface above. No, this new breed hunts for something far more rewarding - US.