The king of the jungle fights off ivory poachers.
After the Banton family rob a store is a small village and kill the local police constable, Tarzan captures one of them, Coy Banton. He decides to return him to the authorities so that the dead policeman's family will benefit from the $5000 reward. The head of the clan, Abel Banton and his two sons have no intention of letting Tarzan deliver Coy and burn the river boat they were to use. Several of the passengers are now stranded forcing Tarzan to take them along on a trek through the jungle. Abel Banton trails them intent not only getting his son back but getting rid of Tarzan.
Tarzan is joined by a reporter and her fiance on a journey to find a boy who was abandoned in the jungle six years earlier. The search party must also battle an evil native, who is out to kill the boy and take over as chief of his brother's tribe.
Summoned by an Indian princess, Tarzan travels to India where hundreds of wild elephants are in danger. A company is building a hydroelectric dam and the contractors have only a few weeks to finish the job. The building of the dam will flood the valley surrounded by mountains. There is one pass through which the elephant herd can escape but that is being closed. Tarzan comes up against an old nemesis, Bryce, the chief engineer. Bryce undertook a similar dam project in Africa and had a penchant for shooting elephants. It's up to Tarzan to organize the move before Bryce manages to close the pass.