When a forest fire destroys their beloved forest sanctuary, Ben and Lila, along with their six-year-old daughter Katie, head west through the earthquake-ravaged landscape, toward a rumored thriving community in Yellowstone National Park.

But another rumor persists as well, that of a "great evil" in the Midwest--one they will have to deal with if they have any hope of making it safely to Yellowstone, a community they are not even sure really exists.

Six years after finding their peace, Ben and Lila have to re-enter the world. Has it gotten better or become far worse?