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 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.