Three American soldiers, the survivors of a helicopter crash in Afghanistan, struggle across the Taliban-controlled mountains. Injured and lacking food, water, and medicine, they discover something far worse than enemy fighters among the sun-bleached rocks: an ancient supernatural power, murderous and unstoppable. Despite a timely rescue demise by a handful of British S.A.S. commandos, they're still hopelessly outnumbered by the shambling, ragged...