Craig's hand passed straight through the mouse. One moment, he was sitting in his office cubicle, answering calls like any other Saturday. The next, his body flickered-transparent, unreal-like he was vanishing from the world. When the elevator doors finally opened, the city had vanished. In its place stood a dead forest beneath a silent sky... and something in the darkness was watching him.

****

Craig's life is ordinary, predictable-and quietly unfulfilled. He goes to work, keeps his head down, and avoids risks. Then, without warning, reality begins to fail him. His body glitches. Time stutters. And one wrong step drops him into a world that should not exist.

Decades after nuclear fire reduced the planet to ash, the remnants of humanity survive behind fortified walls. Outside lurk the Unspeakables-inhuman predators born of devastation. Inside, elite warriors known as Muskers train without mercy, forbidden from love and prepared to die for the population they protect.

As a secret scientific project in the present unlocks impossible technology, past and future collide. One man's choices may determine the fate of humanity, deciding whether it endures or is completely erased.