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.
Marooned after a boat fire, Jonny, Hadji and Bandit are taken in by friendly island apes. Two poachers, hearing of a reward for their return, seek to profit by turning the Quests' misfortune into a ransom demand.
A fellow scientist accidentally creates living energy that only lives to feed on more energy, including that from living organisms. The Quest party answers his plea for help.
Someone goes to great lengths to keep activities in the Quetong swamp lake area private. Dr. Quest gets involved when asked to determine why local fish are suddenly starting to make area fishermen sick.
En route to a Norwegian castle, Jonny can't get the others to believe he saw a periscope following their boat through the fjord, then later seeing a stone gargoyle move.
A mad scientist's sloppy handling of growth bacteria results in giant animals running amok. He abducts Dr. Quest to ensure his help, forcing Race to turn to an old friend to find him.
Dr. Quest's surprise visit to his friend Raj Guru in the high Himalayas of Nepal coincides with a storm having driven the yeti from the mountain into the old palace nearby, or so it would seem.
The Quests land themselves smack dab in the heart of a seafarer's fantastic and nightmarish yarn, complete with a ghost ship, a prowling sea monster, a hold full of coffins, and hidden treasure.
