The fifteenth of Columbia's "Jungle Jim" series, Jungle Moon Men stars Johnny Weissmuller, here playing "himself" rather than Jungle Jim. Jean Byron, who'd previously appeared opposite Weissmuller in Voodoo Tiger, is here cast as Egyptologist Ellen Mackey. Johnny escorts Ellen on an expedition deep into pygmy country, where both are captured by "moon men" that is, pygmies who worship the moon. The ruler of the region is blonde priestess Oma (Helen Sutton), a minor league She-Who-Must-Be-Obeyed who has discovered the secret of eternal life. It is inevitable, then, that Oma will shrivel up and turn to dust as Johnny and Ellen make their equally inevitable escape.