On the way home to Utah to see her sick mother, college student Darby Thorne is stranded by a blizzard at a highway rest stop in the Colorado Rockies. She'll have to spend the night in a rest stop in the middle of nowhere with four complete strangers. Then she stumbles across a little girl locked inside an animal crate in the back of a van. There is no cell phone reception, no telephone, no way out because of the snow, and she doesn't know which of the other travelers is the kidnapper ...