A shortage of zoo animals after World War II brings beautiful animal trainer Tanya, her financial backer and her cruel trail boss to the jungle. After negotiating a quota with the native king, they take more animals than allowed. Tarzan intervenes.

A scientific expedition happens to discover that gold exists on Tarzan's escarpment. The villainous Medford and Vandermeer kidnap Jane and Boy to extort from Tarzan the location of the gold.

Circus owner Buck Rand kidnaps Boy to perform in his show. He forces a pilot to fly him, Boy and his animal trainer out of the jungle. Tarzan and Jane follow them to New York.

A young couple die in a plane crash in the jungle. Their son is found by Tarzan and Jane who name him Boy and raise him as their own. Five years later a search party comes to find the young heir to millions of dollars. Jane agrees, against Tarzan's will, to lead them to civilization.

A group of archaeologists asks Tarzan to help them find an ancient city in a hidden valley of women. He refuses, but Boy is tricked into doing the job. The queen of the women asks Tarzan to help them.