A modern supernatural horror film that explores the dark side of the human psyche, and the terror in facing up to one's darkest fears. Set in London, England, the film begins with a group of theological students who decide to test their faith by proving the existence of Hell. Following their ritualistic summoning of a demon, the students are all found dead, apparently by suicide. Years later, a group of five final-year students are evicted from their student digs and break into the now abandoned Catholic halls of residence for the weekend, only to discover that they're not alone.

In 1913, in Carlton Mine, Addytown, Pennsylvania, the cruel owner of a mine uses poor children in the exploration and after an explosion, a group of children is buried alive. On the present days, Karen Tunny has just lost her husband after a long period of terminal disease when the family savings have been spent in the treatment. Without any money, she moves with her daughters Sarah and Emma to an old house in the mountains that belonged to her husband. Karen is advised by her neighbors to stay at home in the night, and Sarah hears that there are zombies in the area. When Emma becomes friend of Mary, he mother believes she is an imaginary friend. However, when Sarah's friends are attacked and eaten alive by zombie children and Emma vanishes, Karen and Sarah chase her nearby the mine.