 The international criminal Vinaro enjoys sending explosive wristwatches to his enemies. Here he kidnaps ten-year-old Ramel whom he thinks can lead him to the lost city of gold. Tarzan fights the evil Mr. Train, six-foot-six bodyguard of Vinaro, and rescues Sophia, who has been left to die with an explosive around her neck. Various animals help Tarzan locate Vinaro s tanks and helicopters, the city and the boy.