After an emergency landing in the Andes Mountains, Race is challenged to an aerial dogfight by Baron Heinrich von Frohleich, an old German fighter ace of World War I fame (who keeps a collection of vintage aircraft at his Bavarian-style castle in South America). The Baron's machine guns, however, are loaded — Race's are not.

On a visit to the castle residence of a fellow Norwegian scientist, Dr. Quest must help protect his colleague's latest invention (the anti-gravity generator) from a cat-burglar, disguised as one of a row of seven gargoyles on the roof, who regularly breaks into the estate.

During a trip to Nepal, a band of terrorists disguised as yetis attempt to overthrow the local spiritual/government leader (a Dalai Lama-style figure) who is an old friend of Dr. Quest's.

Responding to a maritime distress signal in the Java Sea (east of Indonesia), the Quest group is stranded aboard an abandoned freighter ship with an (amphibious) sea monster.