Part One: A terrifying catastrophe has struck the Earth. An ancient virus from the depths of a crater on the dark side of the Moon is wiping out most of the human population. There is no known cure for the disease and mass panic occurs. Societies on every continent crumble into chaos. Billions of people face oblivion. Alan Turner is one of the very few survivors and he faces devastation all around him. In the wake of the annihilation of humanity a new and even more deadly scourge soon presents iself. As Alan tries to find others still alive a ferocious and horrific predator stalks him. There are bodies everywhere but the predators are growing in number every day.