Zimbo (1958)

Having dedicated his entire life to science, indefatigable Professor Chakravarty, who lives with his wife Uma and their four-year-old son in the jungle, comes up with a potent formula that can save the lives of millions: the nectar of immortality. Then, tragedy strikes. Seventeen long years later, the professor's brother and his daughter, Leela Devi, arrive in the jungle to search for any trace of the missing boy, utterly unaware that some of the men in this expedition have sinister ulterior motives. As the team embarks on a dangerous quest into the unforgivable forest, the ferocious warriors of a native tribe attack, catching the eye of a powerful but elusive jungle-dwelling man. Could he be Tarzan, mighty protector of the jungle?