The Centurions visit Oceania Research Station to observe the testing of a new device, a powerful cryogenic ray. Unfortunately, the centre has already been infiltrated by Hacker and Amber. Despite the Centurions' best efforts, the ray is stolen by Doc Terror's forces. Terror ignites the radioactive belt surrounding the Earth causing the planet's temperature to rise at incredible rate. With the resulting firestorm threatening to engulf the entire planet, Only Doc Terror holds the key to preventing this solar apocalypse, but he will do so only when he is made unconditioned ruler of the Earth. The Centurions try desperate tactics to prevent terror's plans, Max even resorts to disguising himself as the world president in an attempt to find Terror's base, almost getting himself killed in the process. The heroes eventually find terror's headquarters but end up as prisoners of the villain, who destroys their wrist communicators, cutting them off from Crystal and Skyvault. The heroes aren't be

Doc Terror sends Mekko to attack Sea Lab, where the Centurions' weapon systems are created. Max and Ace fight against Terror's forces in South Africa while Jake is visiting Sea Lab and gets caught in the assault orchestrated by Mekko.

A comet is sending out artificial signals, and the Centurions are sent to check it out. When it turns out to be hollow, they beam inside. Within, it seem barren... at least at first. But then, as the comet's true nature is discovered, a new danger emerges from the shadows, a feline creature with the ability to drain anything power-generated, including the Centurions' weapon systems... The trio attempt to evade the beast by beaming to Skyvault, but the alien hitches a ride, and begins a chain of events which could end in Skyvault falling earthwards! Unless the Centurions can think of a way to cage this animal, it will sink its teeth into the best meal he's ever had: Earth's energy resources!

In pursuit of Doc Terror, Ace and Jake manage to force the criminal genius to crash land in the vast African jungle. There, Terror and Hacker stumble across an underground remnant of prehistoric earth, and he sets out to create an army of dinosaur cyborgs. However, Jake and Ace find the cave and attempt to prevent the villain from destroying the present with the past! But first they must contend with the lizard-like race who inhabit this inner world, and who have fallen under Terror's control...

A desert pipe-line convoy goes missing, and the Centurions are sent to track it down. Max is suspicious of General Amid, and checks out his office. He is soon attacked by Hacker, but escapes. Crystal, however fins out that the General is diverting all of the power from the geothermal pipe-line away, and she too goes missing in the desert, abducted by a giant cyborg worm. Crystal is taken prisoner by General Amid, and discovers that he is working with Doc Terror, transferring the energy from the geothermal plant to Dominion. The Centurions free Crystal, but have to find a way to defeat Terror's giant worm.

The new England-France Channel Bridge is attacked by a group of whales under the influence of synthesised whale sounds produced by Doc Terror's new recruit Madame Arpeggio. After preventing the whales from doing any more damage to the bridge, Max consults the whale Whistler, who is equipped with an electronic voice box. He discovers that a giant white whale is responsible for influencing the other whales into attacking the bridge. The white whale is in fact Doc Terror's giant sea-faring android. Max is captured by Terror and learns that he intends to use a whale army to attack Venice, currently hosting a symposium of the Council of World Scientists. Science Lesson: Whales by Max.

Doc Terror steals the new weather master. His associate Professor Storm created a weather helmet that enabled him to create a living tornado. The helmet combined with the weather master could unleash countless disasters.

In Colorado, mercenaries hired by Doc Terror stage a diversion to keep the Centurions busy by attempting to steal a shipment of plutonium. As they battle each other, Terror implements his plan to sink the entire city of Denver into a huge underground cavern and turn all of the city's inhabitants into cyborgs. The Centurions journey underground to get to the captive city and encounter Terror's new cyborg-enhanced mercenaries, who have stolen their exoframes. Weaponless, the Centurions have to figure out a way of saving both themselves and the city of Denver from Doc Terror's forces. Science Lesson: Caves by Jake.

An asteroid containing a powerful ore known as Superium is being transported to Earth. The ship carrying it is attacked by Doc Terror. The Centurions save both the ship and the asteroid, but problems arise, when the Executioner, a master criminal who thinks he lives in the past, takes the place of Dr. Emerson on Earth. Emerson was to have given Crystal a special circuit to enable the safe beam-down of the asteroid to a secret location, but the Executioner instead substitutes it with a chip that takes control of Skyvault's computer. The asteroid is then guided to the Executioner's castle, ready for Doc Terror. With Jake trapped on board Skyvault, Ace and Max captured, the Centurions must find a way to stop both Skyvault's computer and the Executioner. Science Lesson: Asteroids by Ace.

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. Science Lesson: Plants by Crystal.

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. Science Lesson: Arctic Ocean by Max.

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. Science Lesson: The Moon by Crystal.

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. Science Lesson: Niagara Falls by Crystal.

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. Science Lesson: The Mayans by Crystal.

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. Science Lesson: Snow by Jake.

Doc Terror is searching for the Doomstar, a powerful weapon from the late 20th Century, which was lost when the space shuttle carrying it crashed somewhere in the Pacific. He finds it on Moku Island, but when they land, the natives, and their King, Alebi, mistake Hacker for the legendary Captain Steele, the commander of the downed shuttle. The Centurions detect Terror on the island and investigate for themselves. Doc Terror manipulates the islanders into following Hacker's orders and the Centurions look finished. But with Hacker disliking Terror's plan to test the Doomstar on the Centurions and Moku Island, things don't go according to Terror's plan. Science Lesson: Waves by Max.

Blaster McGraw, a baseball star with the Washington Lasers, and an old college friend of Ace's, is kidnapped just before the final game of the World Series. A gambling boss known as the Wheel is the primary suspect, and so Ace and Jake do some investigating in their time off. They find that Wheel does have Blaster hostage, and is working with Amber, Doc Terror's daughter. Ace manages to rescue Blaster from one of Terror's old bases and get him to the game on time, but Wheel decides to attack the Mega-Dome, and steal the game receipts. The Centurions have to stop him and ensure that the game can go ahead. Science Lesson: Robotics by Doc Terror.

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. Science Lesson: D.N.A. by Crystal.

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. Science Lesson: E.S.P. by Jake.

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. Science Lesson: Polar ice caps by Max.

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. Science Lesson: Earthquakes by Crystal.

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? Science Lesson: Recycling by Jake.

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. Science Lesson: Minerals from the sea by Max.

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. Science Lesson: Integrated circuits by Jake.

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. Science Lesson: Fusion by Ace.