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Abby used to be close to her older sister Natalie, but now they seem to have nothing in common. And their constant bickering is putting a strain on the family's winter vacation. After a day on the slopes, their frustrated parents leave the girls alone in their cabin together. But when two suspicious men appear at the remote cabin where they're staying, Natalie is in serious danger. It's up to Abby to use her quick thinking to fend off the intruders. Though the sisters initially escape the intruders, they're forced out into the elements--with the men in hot pursuit. Can the sisters put their differences aside to survive this blood-chilling night?