Tarzan has left his native Africa and ventured to the jungles of Guatemala in search of a missing friend. Tarzan teams up with an expedition looking for a fabled lost city that contains the Green Goddess, a legendary jeweled idol worshipped by the ancients. Tarzan and company travel through the steaming jungles; battling wild animals, the heat and humidity; to suddenly find themselves at the lost city and surrounded by the descendants of the ancients.