When Margaret (Wainwright) and Ben (Gilford) take a weekend trip with longtime friends Ellie (Crew) and Thomas (Santos) and their two young children (Guiza and Mattle), Ben begins to suspect something supernatural is occurring when the kids behave strangely after disappearing into the woods overnight....
After an earthquake leaves Danny trapped and alone, his claustrophobic nightmare only gets worse when something truly horrifying emerges from the fissures in the ground, forcing him to engage in a brutal fight for his life and his sanity....
