A transport plane carrying a high-ranking Taliban prisoner is shot down in a blizzard over Afghanistan's mountainous Hindu Kush. The storm makes rescue impossible and, for the navigator and a female Army interpreter, the battle for survival begins across some of the most forbidding terrain on Earth. They struggle not only against the hazards of nature, but also the Taliban stalking them, villagers with unknown loyalties, and a prisoner who very much wants the three of them to be caught.