A platoon of American and Finnish soldiers is driven deep into a Russian forest where its Captain discovers a terrifying secret.

Four teenagers at a British private school secretly uncover and explore the depths of a sealed underground hole created decades ago as a possible bomb shelter.

In the near future, breathable air is nonexistent and two engineers tasked with guarding the last hope for mankind struggle to preserve their own lives while administering to their vital task at hand.

A young woman is held in an underground bunker by a man who insists that a hostile event has left the surface of the Earth uninhabitable.

After several mysterious accidents, A Live Action Role Playing game is interrupted and the players leave the bunker while the staff remains behind to investigate the disappearance of Greg, the mastermind of the game.

After a deadly virus wipes out most of humanity, the survivors are forced to wait in self-sustaining bunkers with a networked video interface for communication, but one by one, they start mysteriously disappearing.

A teenage girl is abducted and held in a forest in an underground bunker by a sexual predator.