Tarzan and Ja-Bal-Ja are captured by agents of the ancient Roman city of Castra Mare. There, Tarzan makes friends with a group of legionnaires loyal to recently deceased emperor. He and Jad-Bal-Ja help them escape the city.; Boy and Dombie attempt to catch a cheetah to protect Waziri fields from baboons.; The forces that have captured several Aba-Zulu towns become frightened of Alessa and plan to leave the valley. Natongo arrives at Sekani, bringing word that Zulena has disappeared.