Doc Terror creates a heavenly firestorm that threatens to destroy life on Earth.

Doc Terror strikes at the undersea city where the Centurions' Assault Weapons Systems are assembled.

An alien trapped in a frozen rock begins feeding off the energy within Skyvault.

The Centurions try to stop Doc Terror from exploiting a lost prehistoric world deep below the Earth's surface.

Jake and Alex's rivalry threatens the team's efforts to stop the theft of a geothermal power station.

Doc Terror and a bitter composer join forces to encourage whales to attack the new England-France bridge.

Doc Terror unleashes an enormous tornado on the world, and the Centurions must must seek assistance from Max's old flame, meteorologist Isobel Trask.

Doc Terror uses an earthquake to take over Denver, whose inhabitants he plans to use as a cyborg army.

Doc Terror joins master criminal the Executioner to capture the Skyvault computer and gain control of an asteroid full of a valuable mineral.

A shower of meteors heads towards the Earth. The Centurions are sent to try and stop them, however, one of them crashes into the desert. Doc Terror scans it and discovers an invulnerable plant growing on its surface. He gets Amber to place a seed from the plant onto Jake's dog, Shadow so that the Centurions' secret base is attacked by the plant. The plants quickly multiply and proceed to attack the rest of New York. The Centurions discover the existence of a master plant-borg that controls all the others, and try to destroy it.

A meteorite with alien life on its surface falls into the Arctic Ocean. Doc Terror wants it, and sends Mako to retrieve it. Sealab is also interested in the meteorite, and comes into conflict with Terror's forces. The Centurions are sent to diffuse the situation. However, problems later arise when the new Mark-1 A.I. Prototype onboard is infected by an alien virus carried by the meteorite. With every electronic system on board Sealab affected, the Centurions have to neutralise the virus before Doc Terror's approaching forces arrive.

Ace is on the Moon, inspecting the security systems of a mass-driver ore transporter, that ships mined ore from the Moon to the Earth. It soon comes under attack by Terror's Strafers under the command of the cyborg Lunex. Ace is unsuccessful in defending the mining-camp, and both he and it are captured by Lunex. Doc Terror then announces that he will use the mass-driver to launch meteors at the Earth. Ace is rescued, and together, the Centurions beam-over to Lunar free it from Lunex. However, the meteor has already been launched toward the San Andreas fault line, and only Ace alone can stop it.

Randy Chang, the young champion of the Holo-Games, is kidnapped by Doc Terror, who plans to use his strategic knowledge to defeat the Centurions. Terror disguises himself as the ""Gaming Master"" and tricks Randy into thinking that his attacks on the Centurions are merely parts of a game. The Centurions manage to get to Randy, but Terror turns him into Multi-Borg, a cyborg that can split into three parts. The Centurions have to stop Multi-Borg before Randy fully turns into a cyborg.

The Centurions visit Mexico at the behest of Max's old friend Rebecca. The location of the legendary Firebird, an ancient spaceship, was discovered at a Mayan temple, and she wants extra protection from a series of mysterious accidents that have been plaguing her expeditions. Kotan, one of her assistants, is working for Doc Terror, and requests extra help from Hacker. The Centurions manage to discover the location of the Firebird, but Hacker steals the ship and uses it against the Centurions. Together, they must pool their resources and clip Firebird's wings.

A truck containing some of the Earth's dwindling supply of silver is guarded by the Centurions on its way to Geneva. It soon comes under attack from a group of jet skiers. The Centurions stop and capture them, but Jake's Fireforce get-up has been monitored and duplicated by Amber and Hacker. Later, Amber disguises herself as Jake with Fireforce, and together with Hacker, steals the silver for Doc Terror's experiments. Jake is then captured by Hacker, and Amber tries to persuade him to join them. Jake escapes confinement, and with the other Centurions, attempts to retrieve the silver.

The Centurions discover a lost weapon on an island whose natives are loyal to Terror.

The underworld kidnaps a baseball star before the last game of the World Series, and Ace becomes involved in tracking down the missing athlete.

Ace is asked to pilot a new superjet, the XM-2000, for an air show in Paris. No sooner do the Centurions arrive than Doc Terror and Hacker stage an attack. The cyborgs are defeated, and the Centurions free the officer in charge of the XM 2000 and his assistant. Ace offers to walk the young lady home, and during the walk she reveals herself as Amber and kidnaps Ace. When Ace awakens, he finds himself strapped to a mind exchange machine stolen by Doc Terror. Hacker is on the other side, and Terror flips the switch, imprisoning Ace's mind in Hacker's body. With Hacker's consciousness now in Ace's body, Terror can hijack the XM 2000. Ace has to somehow get free, stop Terror and get his mind back into his own body...without getting killed by his fellow Centurions.

Jake Rockwell is sent to give a lecture at Sally Ride HS in Los Angeles. One of the students there happens to be a boy named Jimmy, who has ESP and is picked on by the local jocks. After Jake's visit, Wild Weasel is accidentally left behind at the school, and Jimmy uses his powers to merge with the system. For him, Wild Weasel is a way to impress a girl. But Doc Terror sees them, kidnaps the girl and recruits Jimmy to do some of his dirty work. The Centurions save the kids and stop Doc Terror.

The Centurions defend an Arctic base against Doc Terror's forces, but inadvertently uncover a frozen dinosaur which Jake discovers while out on his own after the battle. The dinosaur attacks the base, and the Centurions attempt to stop it. Terror observes the beast heading towards Dominion and captures it, intending to use it against the Centurions. Feeling sorry for the creature, Amber accidentally releases it. It then soon breaks out of Dominion with her and heads towards San Francisco, where the Centurions have to stop it and rescue Amber.

Hacker is spotted near Manhattan, and the Centurions are sent to investigate. He takes a woman, Cassandra Cross, hostage, but she manages to subdue him with her magical powers. After reviewing Hacker's memory, Doc Terror plans to have her power for himself. Meanwhile, Ace has become smitten with Cassandra, and while enjoying a flight with her, they are both kidnapped by Hacker. In Terror's base under Manhattan, Ace discovers that Cassandra comes from a family of witches. Terror wants Cassandra's powers to sink New York, but before he forces her to help him, she frees Ace as the other Centurions arrive.

The World Council sends the Centurions to protect an anti-matter power plant in Seattle from the international terrorist, Gremlin. But Gremlin has already infiltrated the plant and detonates a bomb, releasing the anti-matter. The Centurions stop the anti-matter from doing any permanent damage, but Max ends up being trapped under the wreckage of the power plant, with Jake and Ace unable to help. Although Max escapes, he leaves the Centurions, blaming Ace & Jake's inactivity during his ordeal. Max accepts an offer to join a temporal research facility which is later attacked by the Gremlin. Max joins up with the Gremlin, hiding him from the other Centurions. Max, together with Gremlin, then ambush the rest of the Centurions. But what is Max's real agenda?

Sealab's field vessel Sealiner 2 is buried undersea when one of its engines explodes. Sealab's current commander, Dr. Regulas, refuses the head of Sealab security Mei Lee's request for the Centurions help and sends divers out to rescue the ship instead. Mei Lee contacts Jake and tells him that there have been three prior accidents in the last month and asks the Centurions to investigate unofficially. Meanwhile, Doc Terror has Hacker plant bombs on a fault line in Mariana Trench while Sealab is busy. Max uses his new Sea Bat weapon system to assist in the rescue efforts, but soon comes under attack by Hacker. They manage to rescue the pilots, but are chastised by Dr. Regulas. Suspecting sabotage, the Centurions must figure out who the real traitor is before Terror's vibro-bombs can crack the world.

After Max catches Doc Terror's aquatic cyborg Mako, he is stunned to be arrested by the authorities instead of his adversary due to the Intertech computer registering Max as a criminal. After being bailed out by Jake, Max returns to Centrum where Crystal tells the Centurions that the main Intertech crime computer has a major malfunction. Finding no trace of a computer virus, the technicians discover that there is a physical fault with the system. To discover the fault, the Centurions are shrunk down in size and placed into the computer. There they discover that Doc Terror has shrunk himself along with some of his troops and entered the computer, intending to damage the central processing unit. The Centurions have to stop him before any permanent damage can be caused.

The Centurions become the subject of a series of special news reports by Jenny Rivers, who is an old classmate of Ace's. But neither Jenny nor the Centurions know that it's a setup; her boss is in cahoots with Doc Terror to discredit the Centurions. The team gets caught up in disasters around New York, and Jenny catches it all on tape. The public begins to believe the Centurions are stealing taxpayer dollars. Ace brings Jenny to Centrum to show her the truth, but before she can report it she is kidnapped by Hacker. The Centurions have to save Jenny and redeem their reputation before the Council disbands them.

In Egypt an archaeological dig at the Pyramid of the Lost Pharaoh, headed by Professor Egon Sloan, is attacked by super-powerful jackals. The professor contacts Skyvault and requests the help of the Centurions to guard the pyramid from tomb robbers. Later that night, Jake overhears the professor using an ancient incantation to awaken the Lost Pharaoh's mummified bodyguards and is knocked out by Hacker. Shadow escapes and alerts the other Centurions, who find out that the professor is working with Doc Terror and intends to use the ancient mummies to help him take over Cairo. As Ace and Max stand up against Terror and his super-powerful mummies, Jake alone is left to defeat them and save the city.

Max takes Ace and Jake to the Lake Eyrie reclamation plant, which he helped to design. Doc Terror decides to attack the plant to cause the Northeast farmlands to wither away. The Centurions successfully defend the plant from Terror and return to Skyvault. There, Jake is hit by an experimental sonic beam and experiences a vision of Doc Terror in charge of Skyvault on January 11th, the next day. Jake snaps back to the present and attempts to explain his vision to no avail, with the no one else believing him. Jake goes AWOL and researches a symbol he saw on Amber's uniform in the future, tracing it to Star-Crossed Industries. Discovering that the company is a front for Terror and that they have disguised a shuttle as a hospital ship, Jake must attempt to prevent the future he saw from occurring.

The World President's yacht comes under attack from Doc Terror's Strafers. With Jake on vacation, Ace and Max alone drive off Terror's forces. Meanwhile, Jake discovers that all is not well in a small town, with its inhabitants seemingly acting like zombies. With the President's train passing though the area soon, the Centurions examine the place further. They find that the townspeople are under the control of Zombie Master, who is working for Terror. He intends to turn the World President into a zombie when his train passes through the town, controlling him. Of course, only the Centurions can stop him.

Doc Terror switches a cyborg for the head of security, Captain Newman, at a secret installation, in order to steal the X-150, a smart missile that never loses track of a target. While transporting the missile, the Centurions come under attack, and Ace is knocked unconscious by a fall. Hacker plants a remote control circuit within his exoframe, so that Ace's movements in battle can be controlled by Doc Terror. Terror attacks again, and manages to steal the missile while Ace's weapons keep firing at Jake. The Centurions later try to get the missile back, but Ace's weapon systems keep firing at his team-mates. The remote control circuit is found, and together the Centurions attempt to destroy the missile as Doc Terror launches it towards Skyvault.

As the Centurions defend a thermal energy plant from yet another assault by Doc Terror, the berillium crystal on board Skyvault that is a key part of the beaming chamber is fractured. Requiring a replacement, Ace and Jake are sent to a jewellers but find that they have all been bought by a company named Star-Crossed Industries. Knowing that the company is a front for Terror, they decide to go to the mine in Tibet that the crystals originally came from. Once there however, they come under attack from Terror's forces, who have been mining all of the available crystals. With Max attempting to synthesize a new crystal in Sealab, and Ace and Jake unable to access their weapon systems, the Centurions must figure out a way of repairing the beaming chamber before Terror's plans can succeed.