The jungle hero finds a baby boy in the wreckage of a plane. He takes the infant home to Jane, and they raise him as their own. However, years later, the boy's grasping relatives turn up, seeking to get their hands on his inheritance. Meanwhile, a menacing tribe kidnaps Tarzan and Jane, leaving only Boy to mount a rescue. Adventure, starring Johnny Weissmuller, Maureen O'Sullivan and John Sheffield.

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.