Veronica hopes she and her boyfriend Gilbert are prepared for the storm-of-the-century blizzard bearing down on their mobile home outside the small town of Crested Butte, Colorado. When a neighbor's car runs off the road, Gilbert drives the man home, leaving Veronica all alone. Until she realizes she's not alone at all. Gilbert returns to find his girlfriend terrified by inexplicable events. As he and Veronica face a long, frightening night, the blizzard ends up being the least of their problems. They thought they could face anything together—but sometimes, people change.