A camping trip goes awry when a young woman is lured from her tent in an isolated region of the Vermont mountains. A private aircraft disappears off radar. A teenager and a wildlife photographer make the list of those who have gone missing without a trace. The one commonality is the location: an area of the Vermont wilderness where a mysterious military experiment is underway. Miles away, Donovan Sinclair receives an anonymous phone with an ominous warning: the lives of his ex-wife and son are at stake. While the caller offers Don a means to prevent this chilling forecast, she exacts a bizarre promise in return. In keeping that commitment, Don has a mission to complete—hiking twenty miles into the Vermont wilderness to deliver a lie. This lie is meant to mark him for life and alter the course of human civilization.