Five carpoolers travel in a camper to reach a common destination. Night falls and to avoid an animal carcass they crash into a tree. When they regain their senses they find themselves in the middle of nowhere. The road they were traveling on has disappeared; now there is only a dense, impenetrable forest and a wooden house in the middle of a clearing. They soon discover that it is the abode of an unnamable cult. How did they get there? What happened after the accident? Who are the masked creatures depicted on the paintings in the house? Can they trust each other to try to get out of the nightmare they have been trapped in?