Ki-Gor the Jungle Lord began life as the son of a missionary. After the Wunguba tribe killed his father, the boy survived in the jungle with the help of his elephant friend, Marmo. Later though an American aviatrix named Helene Vaughn crashes her plane in Ki-Gor's jungle. He rescues her both from her plane wreckage and slavers slowly earning her trust and eventually they got married. The couple later discovered the lost Egyptian city of Memphre that has both pygmies and an trained chimp army.