The jungle king travels to India to help move a herd of elephants threatened by a new dam.

Summoned to India by a dying maharajah, Tarzan attempts to remove an elephant herd from a valley to be flooded upon completion of a modern dam. O'Hara, a contractor who will brook no delay to his project, and Bryce, a longtime adversary and former ivory poacher, oppose Tarzan's mission. He is assisted, however, by Princess Kamara, the maharajah's daughter; Ragu Kuma, an engineer; Jai, an orphan; and the boy's elephant, Gajendra. After Gajendra helps to kill a rogue elephant and kills Bryce to defend Jai, Tarzan and his company drive the elephants to safety through a narrow pass. During the escape the dam is damaged. Acknowledging their responsibility, Tarzan and the Indians reconstruct the project with the help of the elephants.