A rocket malfunctions and crashes in the Arctic. Dr. Benton Quest is dispatched to find the rocket but must contend with operatives of a hostile foreign power who seek the same thing he is.
To save Dr. Quest and his friend from a ritualistic sacrifice to a native fire god, Race must convince savage tribesmen that he's their water god, that he's powerful, and that he's angry.
Home movies from India remind the Quests how Hadji came to join their group back when Dr. Quest had dealings with a secret nerve gas factory in the snowy Himalayan mountains.
Voodooism is held responsible for all but one last owner deserting plantations on Tanaiga Island, but Dr. Quest believes drugs are more responsible than mysticism.
In the jungles of Brazil, Hadji, Jonny, Race and Bandit get on the bad side of a tribe of angry and relentless pygmies after saving their human sacrifice from death.
Dr. Quest heads up the Amazon to the Land of the Turu in pursuit of high grade trinoxite, a new metal essential to the space program, unaware that "Turu" is a live pteranodon guarding the deposit.
The atypical behavior of a volcano catches Dr. Quest's interest, initially unaware that it's the latest weapon project of Dr. Zin, protected by sharpshooters on hovercrafts.