"Big-game hunter and crack jungle guide" Frank Dumont is visited by Marta Svenstrom. Marta is seeking her father, Dr. Gunnar Svenstrom, a naturalist who disappeared in the wilds of Uganda. It's been a year since Gunnar's disappearance, but Marta has pictures of a white haired man who she thinks is her father. Frank reluctantly agrees to organize the expedition. Balooga, Frank's headman, will lead a safari of bearers into Uganda. Frank and Marta will meet the party there, flying in by helicopter.