The Cabin in the Woods 2 picks up right where the first one left off, as the Ancient One Awakens all Hell breaks loose!
The Ancient One Awakens . . . Meanwhile, Dana and Marty find themselves in "Purgatory" where they encounter Demons and Monsters right out of their worst nightmares. While in Purgatory, the tributes find themselves lost in a netherworld unfamiliar to their own.
Dana discovers that she cannot die, seeing that she is already dead. However, pain and suffering does indeed still exist there.
In Purgatory the tributes find themselves surrounded by other "trapped" souls. (Those who were sacrificed to the Ancient Ones prior to them.)
Purgatory is a place or state of suffering inhabited by the souls of sinners who are punished for their sins before going to Hell.