Yearning to discover the fabled Elephant's Graveyard rumoured to contain a million of pounds in ivory, the seasoned English explorer, James Parker, receives an unannounced guest in his African trading post--his only daughter, Jane. As the adventurous young woman insists on joining her father and his partner--the great hunter, Harry Holt--on an exploratory expedition deep into the dangerous green labyrinth of the sacred Mutia Escarpment, before long, a life-changing adventure will commence. Now, wild predators, tribal pygmy warriors that no white has ever seen before, and silent horrors await to put an end to the intrepid treasure hunters' ambitions, as an elusive but powerful man-like creature has already set his sights on his exotic prey, Jane. They say this is the hidden realm of Tarzan, the mighty Lord of the Jungle. Could that long and fearful yell belong to him?