After secrets and betrayal shatter his marriage, Josh Mallory seeks solace on the Pacific Crest Trail in the mountains of Washington. This backpacking trip turns grisly when he comes across the body of another hiker who seems to have fallen to his death. Josh is forced to detour through a small mountain town with missing hiker posters and residents who show no interest in hearing about the dead hiker. Unease that something is not quite right chases...

After her sister awakes from a coma with skills she never had and premonitions of things she has never seen, a woman seeks out the assistance of Harper Blaine, a Greywalker.