While adjusting to a new life in the suburban community of Aspen Ridge, a recently divorced mother of two receives mysterious letters instructing her and her teenage children to kill the people in their letters before they kill them. Paranoia and chaos ensues as the family attempts to rationally deal with an irrational situation.

Trapped in a house, two childhood friends try to convey their feelings to one another while being hunted by a group of ruthless scavengers in a never-ending winter blizzard.

While adjusting to a new life in the suburban community of Aspen Ridge, a recently divorced mother of two receives mysterious letters instructing her and her teenage children to kill the people in their letters before they kill them. Paranoia and chaos ensues as the family attempts to rationally deal with an irrational situation.