A hitched ride home in a snow storm turns sinister when one of the passengers is plotting for the ride to end in disaster. When Mira flies home to spend Christmas with her mother in Pittsburgh, a record-breaking blizzard results in a cancelled layover. Desperate to get to her grief-ridden mother in the wake of a family death, Mira hitches a ride with a group of friendly college kids who were on her initial flight. As the drive progresses and weather conditions become more treacherous, Mira realizes that the four other passengers she's stuck in the car with don't actually know one another. Soon, they're not just dealing with heavy snowfall and ice-slick roads, but the fact that somebody will stop at nothing to ensure their trip ends in a deadly disaster.