It is July 2nd, an ordinary summer day... until, without warning, enormous shadows fall across the land. The question of whether we're alone in the universe has finally been answered; in a matter of minutes, the lives of every person across the globe are forever changed. As shocking as the arrival of extraterrestrials is, the world is unprepared for what they do next -- merely a day after their sudden arrival, the aliens obliterate a dozen major cities. It becomes clear the aliens will wipe out the human race in a matter of days... unless the survivors — armed only with inferior technology, wits and courage — can stop them first.