Jungle Jim does battle with a would-be diamond smuggler and a renegade tribe.

Bad guys trying to steal the mineral rights away from African natives find it isn't so easy fighting Jungle Jim.

Jungle Jim is forced to lead anthropologist Dr. Edwards into a land inhabited by giant people.

Football player Bob Miller, played by an actual football player, is lost in the jungle. Who else to find him but Jungle Jim.

Aliens, contacting scientist Adam Penner, inform him that they have been on the moon for twenty thousand years, undetected due to their invisibility, and have now decided to annihilate humanity unless all the nations of earth surrender immediately. Sequestered in an impregnable laboratory trying to find the aliens' weakness, Penner, his daughter, a no-nonsense army major and a squeamish scientist are attacked from outside by the aliens, who have occupied the bodies of the recently deceased.