Two corrupt karate fighters crash their plane in the jungle, and pretend to Tarzan and Jane that they are champions on their way to a tournament. But they are really smuggling rhino horn powder out of the country. Jack discovers this, and tells Jane. The karate experts tie up Jane, Roger and Jack, and plan to dynamite them. Cheetah, Tantor and Tarzan must rescue them. It is now a dangerous question of whose plan blows up.