When they stumble into a poaching depot in Rio de Janeiro, Jane and Tarzan combine wit and strength to help free the animals from captivity.

Tarzan and Jane travel deep into the forest to track down the poachers. But first, they must navigate the treacherous rapids of the Teles Pires River.

After hearing the Kuro Anowi people's story, Tarzan and Jane set out in search of the poachers' base and find the ruins of a lost civilization.

Outwitting the guards inside the ruins, the plucky duo find their way to a control room and discover the scale of the global poaching scheme.

Tarzan and Jane fight to put a stop to Dr. Blutgeld's plans, then discover the truth about the legend of the Pellucidar.