Synopsis by Hans J. Wollstein
With La's (Kithnou) tribesmen closing in on them, Tarzan (Frank Merrill), aka Lord Greystoke, manages to save Lady Jane (Natalie Kingston) from a ferocious alligator. Meanwhile, back at the Greystoke estate in England, Tarzan's advisors worry that the jungle man's quest to rescue the financially strapped manor may have failed. Philip Annersley (Clive Morgan), Tarzan's cousin and second in the line of succession, proposes to fly to Africa and search for the missing heir himself. But as a letter reveals, Annersley is in cahoots with Tarzan's worst enemy, Werper (Al Ferguson). In Africa, at the Temple of Opar, where Tarzan hopes to regain his lost memory, Werper once again attacks the jungle man. During the struggle, the combatants plunge into a pit.