Fourteen years before the cabin: Anne meets the man of her dreams right out of college, but after they get married he begins acting differently. Why is he suddenly so moody? A week before the cabin: 10 years on Anne and her daughter Thea are safely living in Vermont. When Thea starts showing signs of teen angst, a trip the White Mountains of New Hampshire seems like the perfect chance to bond. The cabin: A man follows the women on a hike at a nature reserve and drags them at gunpoint to an abandoned cabin. And just like that their peaceful weekend away turns into a fight for survival.