After a crazy virus breaks out, Bree is forced to go back home and stay with her mom and stepfather. But when they try to drag her into a bunker she takes off, not wanting to be stuck with her creepy stepdad. Driving aimlessly down an empty road in the middle of Alaska, she hits a deer. With her car broken down, she ventures out on foot and ends up at the doorstep of a cabin. The cabin of two strangers.