In order to save them from extinction, explorer Grantland Cunningham (
Stanley Farrar) engages animal trainer
Clyde Beatty to accompany him to Africa to capture a few of the last known
Nubian lions. The pair run afoul of hunters led by Gorman (
John Doucette) who wish to kill rather than capture the big cats. Beatty and Cunningham are aided in their quest by humanitarian Jo Carter (
Phyllis Coates). Gorman is nearly killed by a gorilla and when Clyde saves him, he offers to help find lions. The expedition to Southern Rhodesia takes the two men into dangerous tribal areas. After a series of dangerous encounters, both Clyde and Grant make it back to safety, vowing to set out on more adventures in the future. == Cast ==