Five college students leave New York City to celebrate a birthday in the country, but find the party cut short when they encounter an unimaginable evil. Miriam (Elyssa Mersdorf) is turning 21. With the keys to her aunt's remote vacation home secured, she invites her friends Cassy (Laurel Casillo), Mark (Morgan Hooper), Tanya (Torry Weiss) and Leo (Ryan Maslyn) out to the country to help ring in the big day. As soon as the group gets out of the city, however, a snowstorm blows in and a mysterious van keeps appearing in their rearview mirror. Eventually, Miram and her friends reach their destination, with shutterbug film student Leo documenting the journey for prosperity. The following morning the countryside is covered in snow, and the friends set out to explore some local caves. Panic starts to set in, however, when the group loses their way, night falls, and strange sounds emanate from the surrounding woods. When the cabin appears in the distance, everyone things they're home free. But the moment they come in from the cold, the real terror begins.