Sixty years after the conclusion of an ancient war, hardly anyone on earth is aware of just how close humanity came to extinction. The same goes for Charleston Police Officer Desmond Kalish-for now.
When a string of horrific murders sends a shockwave through the West Virginia capital, Desmond is determined to put the culprit behind bars. A break in the case puts the police hot on the killer's trail-at the same time thrusting Desmond into the heart of a secret world that will stretch his concept of reality beyond its limits. Desmond faces a choice: run back to the familiar, or accept the danger of the unknown?
Before Desmond has a chance to weigh his options, an enigmatic preacher emerges from the shadows to set a sinister plan several decades in the making into motion. To prevent the coming apocalypse, Desmond and a team of mysterious agents must head back to the place where it all began: a little town by the name of Ashley Falls.