Five hundred years ago, a rogue AI known as the Core unleashed a horde of machines to seize control of Earth and exterminate humanity.

Now, former soldier Leon Imus has the grim honor of being the last surviving human. In a world gone to hell, he intends to bring the brimstone and put bullet holes in as many of the Core's fiendish machines as possible.

But a shocking discovery in the remote hills of Pennsylvania changes everything. Revenge for mankind is no longer Leon's top priority. He has a chance to save humanity, to stave off extinction. But the clock is ticking.

And the race begins now.