Dr. Benton Quest and his long-time friend and aide "Race" Bannon, along with Quest's son Jonny and his friend Hadji Singh, investigate the upper threshold of science and the world of the paranormal, travelling the world and solving puzzles, locating hidden artifacts, battling evildoers such as the evil Dr. Zin, and escaping danger at every turn.
E1
E2
E3
When a series of alien abductions and sightings occur, Jonny and Haji are kidnapped and the elder Quest and Race run into an old foe.
E4
E5
While investigating a sunken German U-boat that is supposedly carrying a time-travel device, Dr. Quest and his team get transported back to 1944.
E6
E7
E8
The Quest's receive a request for help to end the reign of terror by the ghostly clay warriors.
E9
An old enemy of the Quests uses a mechanical cloud to hide his airship and wreak havoc from above.
E10
E11
E12
E13