When Tarzan and a young woman threaten to expose his gunrunning scheme, a smuggler sends assassins after them.

Jai and Dutch encounter a fugitive who is trying to evade a manhunt by joining the circus.

A deadly tiger is loose in the jungle but, despite a warning from Tarzan, an engineer insists on continuing work on a project although he lacks the experience to cope with the animal.

Jai's pet baby elephant is charged with killing a white man. Under tribal law the elephant is entitled to a trial. Jai goes on the search for evidence and someone to present it.

Tarzan comes across a party of religious pilgrims who are being led by Rosanna McCloud to their "Promised Land". To not shatter their dreams, Mrs. McCloud does not inform her followers that her husband, whom they regard as their Prophet, has just been killed, and she is unaware that the government trader who sold the group the land from a reclusive tribe had his own motives for doing so and never intended for the group to reach it. When Rosanna finally tells her group about the death of their leader, she and Tarzan also find that their money has been stolen.

Rosanna McCloud and her pilgrims are determined to continue in their trek toward their Promised Land, even after one of their people is killed. Now they are armed and determined to fight off the tribe that lives in the land. Tarzan, meanwhile, learns that the chief of the tribe was tricked into selling the land by the trader Whitehead, whom he hopes to expose before more blood is shed.

Jai loses his memory and a group of criminals decide to exploit the situation to plan a series of robberies. Tarzan must track down the men and attempt to save Jai before he gets into serious trouble.

A nun returns to her village to bring medicine an treat the sick. She is torn between her tribal heritage and those who oppose her new life.

Trina MacKenzie, one of seven girls on an expedition, is also trying to find her uncle, who she believes to be doing humanitarian work. She finds that he has become the leader of a large tribe, and has helped them develop more peaceful ways. But Tarzan comes to believe that his latest crusade, involving a statue he claims to be obtaining but which locals insist does not exist, may involve less than noble intentions.