On the road to Fargo, North Dakota, Matt Cahill is trapped in a hellacious blizzard on a frozen, traffic-choked interstate. He's stalked by an escaped murderer and the guards who were transporting him--all of them seemingly possessed by a mutant virus that spreads quickly among the others trapped in their cars, turning everyone into crazed zombies. Matt struggles with a small band of survivors to find the source of the horrific plague before it claims them all. The odds are against any of them surviving the night....and that includes Mr. Dark.