The Vallerio Forest. Millions of acres of undeveloped land, cut off from the outside world by giant fences, armed guards, and government edicts. It's widely considered an ecological paradise. But beneath its majestic canopy lies a dark underbelly of strange creatures, secret facilities, and horrifying experiments.

Five months ago, survival expert Zach Caplan swore off the wild and moved to New York City. But when trouble strikes his ex-girlfriend, famed biologist Amanda Morgan, he must return to the forest that nearly destroyed him. This, however, will prove far more difficult than he could ever imagine.

For something is stirring within the Vallerio. Something ancient, something deadly. And as Caplan fights to untangle the terrifying truth about the dark forest, he will come to an inescapable conclusion. The fate of humanity is in his hands ... and one wrong move could mean extinction.