Race is hired to contain a nerve gas leak in Chicago, the legacy of a botched raid on Dr. Jeremiah Surd years earlier. When he and Dr. Quest are trapped, it's up to Jonny, Jessie, and Hadji to find the renegade scientist.

When Ezekiel Rage hijacks a space shuttle commanded by Dr. Quest and Hadji, Jonny and Jessie must stop Rage's minions who have taken over Mission Control.

Jonny, Jessie and Hadji track an elephant, Ndovu, as it returns to the elephants' graveyard. They bump into poachers on the way there, who are determined to kill Ndovu right away.

A tiger is loose in the Big Apple, and the Quest team must track it down, through subway tunnels, located underground.

With Benton Quest and Race Bannon attending a phenomenology conference in the Himalayas, Jonny and Jessie are forced to impersonate their fathers in Questworld when Jeremiah Surd launches a two-pronged attack on the Quest compound - and Hadji's mind.

Alice Starseer returns to Earth to lay her grandfather to rest. But Jeremiah Surd is determined to find out what she's learned.

On an archaeological expedition in Borneo, the Quest team run into a giant creature, reputed to savagely attack from all directions at the same time.

Jeremiah Surd taps into and gains control of the cetacean communications internet, prodding cetaceans worldwide into savage attacks; the Quest team enlists the help of Captain Havell to stop his plan.

In the Old West, the thief Belle Bonnet stole a wagonload of gold to help an Indian school stay open, but both thief and gold were lost in vast caverns under the American desert—until the Quests took the case.

A werewolf attack in the Yukon brings a Quest team investigation to the home of a humanitarian doctor; the light of the moon illuminates both danger and mystery as the hunt begins.

A missing link is found in an alien spaceship that landed on Easter Island. But when Dr. Quest and Race enter Questworld to investigate what they've found, they run into Jeremiah Surd - who wants to experiment with human de-evolution.

Dr. Quest is missing while on an expedition to find the Yeti. Jonny and his friends head to the Himalayas to find him, but run into another scientist who's determined to bring back the Yeti.

While trying to reach Northern Siberia to backup the Quest Team, her plane crashes and she discovers a colony of ancient Russians underground.

Ezekiel Rage steals a compact nuclear device and plans to blow up the polar ice caps. The Aurora Borealis holds the key to stopping him.

Air Force One vanishes with the president within it, and all the evidence points to Benton Quest and Race Bannon. Jonny, Jessie and Hadji must elude government agents to prove their fathers' innocence by finding the real culprit.

The Quest team employs QuestWorld to try and revive Race, who has been rendered comatose in a rodeo accident caused by Jeremiah Surd -- who in turn exploits the opportunity to attack Race at his most vulnerable.

The Quest Team help a scientist harvest life-giving sap from trees that are being threatened by a logging operation in Cameroon.

Ezekiel Rage plants a nuclear bomb in the bowels of Earth and Jonny and Jessie must revert back into time to stop his evil deed.

Dr. Quest travels to a Venetian mansion to authenticate the claims and machinery of paranormal scientists. The situation turns dire when the machine accidentally empowers a malevolent entity.