Lord Denisson went to an amazing expedition, having obtained information about the entrance to the underworld. For a long time there is no news about him, and then the wife of the traveler decides to equip the rescue squad and follow the footsteps of pioneers. Rescuers find the entrance to the cave through which Denisson’s group descended and sneaks down. Instead of the expected mazes, characters get to a surprising and dangerous world in which one can see many ferocious prehistoric monsters.