It happened one day in April. Huge explosions in skies across the world heralded the coming of the Gorgon ships, sparking a worldwide panic. Indestructible, they blasted Earth's greatest cities into rubble. Then, through portals opening in the air, came the skeletal Cyphers. And Earth became a battlefield in a war between two alien races bent on mutual destruction. In Colorado, just over a hundred survivors have found sanctuary in the ruins of an apartment complex-and it's not just the Gorgons and Cyphers who threaten them. They are regularly besieged by the Gray Men, humans mutated by something in the atmosphere into monstrosities straight out of nightmares. With their ammunition and supplies dwindling, the remaining humans face a bleak future. Then one day, a teenage boy appears, seemingly human, seemingly the victim of catastrophic injuries. He can't remember where he came from, but he senses a power within himself-one that causes an earthquake to repel a horde of Gray Men. A voice speaks to the boy in his sleep, telling him to find "the white mansion." Now, the one thing the survivors need most of all is blossoming within them: hope. But only if they choose to trust in a boy who has no memory and only three words from a dream to guide him...