Seething with rage toward what he considers the sinful modern world, a survivalist named Cliff retreats to an uninhabited valley deep in the Colorado Rockies. He has outfitted a 1930's-era miner's shack at timberline and has stocked it with food, equipment, and weapons. In this aerie Cliff awaits the collapse of civilization and the End of Days. He is prepared for any and all calamities. Soon, however, it's unclear whether the Tribulation that befalls him is happening out in the world or inside Cliff's own mind.