Siblings Addison (Eric Bana) and Liza (Olivia Wilde) are on the run from a casino heist gone wrong. When a car accident leaves their wheel man and a state trooper dead, they split up and make a run for the Canadian border in the worst of circumstances – a near whiteout blizzard.
Ex-con Jay (Charlie Hunnam) gets released from prison and calls his parents, June (Sissy Spacek) and retired sheriff Chet (Kris Kristofferson) that he'd be home for Thanksgiving. Jay confronts his coach who betrayed him and demands his money but he beats Jay up. During the struggle, Jay, a former boxer, inadvertently seriously injures the man. Thinking he's killed him and will go back to jail, he flees the scene.
Hannah (Kate Mara), a sheriff's deputy, visits Jay's parents and is invited by June to be in their Thanksgiving dinner that night. She goes back to the police station where is she treated poorly by her own father and town sheriff, Becker (Treat Williams), not having included her in the operation of tracking down the unknown criminals.
Jay drives into a shivering Liza in the middle of the road and takes her in. He offers to drive her to the nearest gas station. While wandering into the snow, Addison encounters an elderly man tending to his damaged snowmobile. He attacks the man who falls unconscious, only to be tricked and slices off Addison's little finger. A fight ensues between the two with Addison overpowering the man and stabbing him to death. Addison then rides off with the man's snowmobile.
Jay stops by a bar where Liza gets back on his truck to find Jay's address and calls Addison to meet up there. She gets back inside and goofs around with Jay when they pretend to be a couple to the server.
Meanwhile, Addison invades a cabin not far from the woods and kills the abusive father of the family. After dumping the man's body, he tends to the distraught wife and her children.
Jay and Liza develop a romantic relationship when they share their stories and soon end up having sex in a motel. Hannah, gathering information about the crime, performs a duty from a woman who gets concerned for her relative (the mother living in the cabin), who never showed up to her.
Realizing that she has feelings for Jay, Liza calls back on Addison and tells him that Jay left her and she couldn't proceed on with the plan and tells him that she would just find another person to share a ride with. When Jay notices Liza had left, he chases her and tells her that he has feelings for her, although Liza is only protecting Jay and telling him that it was only a fling. Liza tells Jay how her brother Addison was her protector from their abusive father, who was killed when they were young. She confides to him how she wants to have a family of her own instead of being messed up.
Hannah, along with two male colleagues, starts to investigate the cabin. When Hannah notices the man's corpse, she realizes that the perpetrator is in the cabin and signals one of the officers but is blasted with a shotgun. The two officers give chase to Addison in their snowmobiles but the male officer gets killed. Hannah then calls for back-up.
Addison arrives at Jay's house and holds his parents captive. When Liza and Jay arrive for Thanksgiving dinner, June steps out and tells him about the situation, startling Liza. They all eat dinner together and Addison discovers how Liza is involved with him, although Liza is protective of Jay and his family. Hannah, after having received a call from a Detroit detective about Jay's coach, who received only a concussion after the earlier fight, arrives and is also taken captive by Addison.
Becker notices Addison's snowmobile leading up to where they all are and soon investigates the house. When he gets to the kitchen, he shoots Addison, only to find out it's his daughter Hannah, dressed up as Addison. Hannah seems unharmed but when Becker turns his back, he is shot by Addison. A struggle between Jay and Addison ensues outside with Jay overpowering Addison, who soon gets up and questions Jay about his love for Liza. Before Addison can harm Jay, Liza fatally shoots Addison.
- Eric Bana as Addison
- Olivia Wilde as Liza
- Jason Cavalier as Travis
- Charlie Hunnam as Jay
- Kris Kristofferson as Chet
- Kevin Desfosses as State Trooper
- Alain Goulem as Bobby
- Allison Graham as Mandy
- Patrick Kerton as state trooper (2)
- Sissy Spacek as June
- Kate Mara as Hannah
- Treat Williams as Becker