In another time and another world, four teenagers choose to seek out the mysterious door in the woods. When it suddenly opens, the teenagers fear the unknown. But is their fear justified?
One night, an unusual stranger in need asks a woman living alone in a house in the woods if he can use her phone. It soon becomes clear that they're playing a strange mind game and that there's something very wrong about the woods.
After a personal tragedy, Sarah joins her friends on a caving expedition in the Appalachian Mountains. But when a rockfall traps them deep underground, their adventure turns into a nightmare. As they search for a way out, the group discovers they are not alone—lurking in the darkness are savage, cave-dwelling creatures. With rising tension and dwindling trust, the women must fight to survive against both the predators and each other.
While on a hunting trip in the isolated wilderness, a father and his adopted teenage son are turned into the prey of unknown assailants. They are unexpectedly joined in their fight for survival by a stranger who reveals the disturbing truth about the son's biological father, an international crime lord, and why that crime lord has sent trained assassins to kill the teenager.
As an evil takes over the world beyond their front doorstep, the only protection for a mother and her twin sons is their house and their family’s protective bond.
Teenager Winnie Foster is growing up in a small rural town in 1914 with her loving but overprotective parents, but Winnie longs for a life of greater freedom and adventure.