A camping trip turns into a living nightmare when a blizzard traps four friends in 36 inches of sudden snow - And shrieking alien sounds outside of their tents. A race for life ensues as they are hunted by horrific monsters, discovering a larger alien conspiracy with every terrifying stride. Out in the woods and away from civilization, what starts as a normal camping trip turns into a nightmare when four friends are confronted with shrieking alien sounds outside their tent.