Each night a boy named Tom is cursed with visions that reveal the nightmarish realm of the shadow creatures and countless barren worlds laid waste in the Shadow's wake. A secret organization known as the Shadow Cult exploits these hellscapes, searching for "travelers" like Tom and culling them for their insidious purposes. His mother Rachel is his only chance for protection.

Rachel's desperation grows. Each agonizing night she watches, helplessly as her son Tom descends into a shadowy hellscape of death and destruction of his own imagination, or is it? Their perilous search for answers ensnares them both into a nightmarish world and revelations of a far greater threat from which there may be no escape for them or humanity. Can they unlock the secrets to defeating the Shadow before it is too late to escape its grasp?