When a native policeman is seriously injured by a diamond thief, Tarzan tries to get the criminal to jail - and keep the officer's angry tribe from taking the law into its own hands.

Tarzan tries to stop a blood thirsty Colonel from taking over an African village with his soldiers of fortune. Tarzan has been rendered deaf by an exploding hand grenade, effectively limiting one of his keen senses. Tarzan relies on his telepathic powers to a lion.

Though still deafened by grenades, Tarzan relies on his animal friends to help him elude the colonel's heavily-armed soldiers.

Against Tarzan's wishes, Jai is given a rifle by one of the local hunters. However circumstances change and Tarzan discovers the value of allowing the boy a firearm.