In this Ivan Tors action adventure (that later served as the basis for the television series Cowboy in Africa, John Mills appears as Wing Commander Howard Hayes, now having hung up his wings for ranching in Kenya. Hayes hatches a solution to alleviate the hunger of Masai villagers with a plan to domesticate wild African game. To do this, he imports from across the sea two authentic ridin' and ropin' American cowboys -- Jim Sinclair (Hugh O'Brien) and his faithful sidekick, John Henry (Tom Nardini). While the two sod busters corral wildlife for Hayes, Sinclair falls hard for an attractive nurse, Fay Carter (Adrienne Corri) and befriends a young native boy (Charles Malinda). But this African idyll is soon torn asunder when rancher Karl Bekker (Nigel Green) -- fearing that Hayes' wild animal domestication will breed disease and the contagion will infect his own prize cattle -- using any means necessary, sets out to sabotage Hayes's plans to feed the hungry. All riled up, Jim Sinclair swings into action to help Hayes.