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.

In Chicago, a traditional private eye by the name of Gabriel Knight is asked for help by Crystal Kane, to find out who framed her for Zone Dancing-illegal tapping into corporate computers by connecting people's minds into them. Having seen that Crystal was wearing a real droud (the skull plate allowing connection with computers), Knight seeks out Gibson, a former Zone Dancer who tells him about a dancer in the Zone named Neon who is reputed to have stolen data from Skyvault's computers. Meanwhile, Dr. Wu informs the Centurions that Megacorp, the company that designed Skyvault's beaming program, has had the program illegally duplicated by a Zone Dancer, who now has access to Skyvault's beaming files. Ace is sent to Chicago, along with John Thunder, who is specially recalled for the assignment. At Megacorp, Ace and John find Crystal stealing the data and wearing a droud. After escaping from her trap, they return to Skyvault and deduce that whoever stole the beaming program created a beam

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!

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.

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.

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 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.

Dr. Nathan Romalus is hired to create a new type of lifeform that can take on the appearance of anyone. After hearing of Terror's plan to replace the World Council of Scientists, he has second thoughts and informs Crystal of the experiment. The Centurions are sent to deal with the creatures, but Terror manages to escape with them and Romalus himself. Faced with enemies that can alter their appearance, the Centurions must figure out a way to stop Terror's plan before the Council can be replaced. Science Lesson: Skyscrapers 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.

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.

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. Science Lesson: Relativity by Ace.

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. Science Lesson: Volcanoes by Max.

A mad geneticist, Dr. Yates, attempts to create a lizard army, but is thwarted by the Centurions. However, during their struggle he accidentally injects himself with lizard serum and becomes a human chameleon, able to change form at will. He vows revenge on the Centurions, currently vacationing in Monte Carlo. The Centurions are not easily beaten, but when the enemy could be one of them, can even they win?

After Terror's borgs launch a raid to steal an energy enhancing device in Japan, Hacker is captured by the Centurions and put on trial for all his crimes. Hacker refuses to divulge any of Terror's secrets, and after Terror fails to rescue him from the authorities, Hacker is sentenced to life imprisonment on the Alcatraz asteroid prison. Hacker is then allowed to escape, to become bait to lure Doc Terror and his stolen energy enhancer into the open, ready to be dealt with by the Centurions. Science Lesson: The space shuttle by Ace.

As Doc Terror's borg Mutron attempts to steal an experimental virus, the canister is accidentally damaged when the Centurions apprehend him. The Z-80 virus then begins spreading over the Earth. The only one able to stop the virus is its creator, Professor Manfred Owell, who left with other scientists twenty years ago to live inside a sungrazer comet under the leadership of Dr. Daimon Zemo, intending to create a utopia. Crystal and the Centurions use the Starfire, a prototype ion drive ship to get to the comet in time. Inside the comet, the Centurions meet up with Owell and Zemo, who distrusts them. As the comet is now on a course straight for the Sun, Owell requests the help of the Centurions to save the comet against Zemo's objections. As the virus spreads over the Earth, the Centurions must deal with Zemo's sabotage and save the comet as well as their homeworld. Science Lesson: Genetic modification by Crystal.

Jake has Crystal beam Ace back up to Skyvault, freeing him from the squid's clutches. Naro tells Jake and Sean that he intends to use the probe to take over Atlantis, and O'Connor agrees to help him. Meanwhile, Max and the two from Sealab escape from their confinement and look for a transmitter, but are stopped by Diana troops. Ace returns to Sealab, which engages its new force field to descend to Atlantis' depth. Max and the others escape from Atlantis and take Diana with them, but they are soon attacked by Naro's forces. Sean uses the Venus Probe to return to Sealab, where it is soon boarded by Naro and his followers. Jake escapes and beams outside Sealab, where he attempts to get on board. Sean reveals to Ace that he's still really on their side, and together they attempt to regain control of the base. Now working with Diana, Max and the rest of the Centurions try to defeat Naro's forces. Science Lesson: Uranus by Ace.

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.

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.

Ace and Crystal are invited to the Pleasure-Star, an exclusive space station resort connected to the Earth via an orbital elevator, Skystalk, for a vacation. Meanwhile, the station's owner, Anson Harshaw, is investigated by Dr. Wu for allegedly conducting illegal mind-transfer and cloning experiments. Crystal witnesses Dr. Wu being chased by androids, and orders Max to come and investigate. They are captured by Harshaw, and learn that he is replacing all the visitors to the Pleasure-Star with android duplicates in order to control key positions in the World Government. Max uses an escape pod and contacts Jake, who arrives to bail Ace and Crystal out of trouble. Harshaw decides to blow up the space station, leaving the rest of the connecting Skystalk to fall onto the Earth. With Ace and Crystal trapped inside the Skystalk itself, the other Centurions have to figure a way to rescue them and save the Earth from Skystalk's descent. Science Lesson: Gravity by Ace.

The Mesa Verde space testing station comes under attack by Terror's borgs. The Centurions arrive and battle his forces, but a nearby dam is destroyed, and a clifftop school pleads for help. Leaving Terror's forces to capture a new experimental space shuttle, the Centurions save the school, only to find it empty. Later, at a hearing, Centurions are blamed for causing property damage and suspended from active duty by Mr. Lomax on behalf of the World Council of Scientists. An investigation committee from the council look around Skyvault while the Centurions investigate the school's site. One of the committee members places a bomb on Skyvault at Terror's request, while the Centurions investigate the three committee members themselves. The Centurions must figure out who the real traitor is before Skyvault is destroyed by the bomb. Science Lesson: Natural heating & cooling by Jake.

A man claiming to be the deceased General Harding accesses security files on Crystal Kane's former fiance, Colonel Chuck Bates who disappeared in a rocket explosion five years ago, and transmits the information to Doc Terror. Harding was a hologram, and Terror also creates a hologram of Bates to lure out Crystal, while the Centurions are kept busy with Terror's forces on a space shuttle, Sealab and in Siberia. Crystal detects the wreck of Bates' old ship in Laos, and leaves Skyvault to find him. There she is captured by Bates' hologram and taken to Doc Terror. As the hologram of Bates begins to have second thoughts about assisting Terror, the Centurions stand ready to make their move and rescue their commander. Science Lesson: Holograms by Ace.

Mei Lee and her colleague Jason from Sealab, are exploring a recently-discovered underwater trench, the deepest ever found. Their sea-bubble comes under attack by a giant squid and loses contact with Sealab. Max is sent to rescue them, but he too is attacked and loses contact with Sealab. Ace and Jake are sent to NASA to use an experimental Venus Probe, as only the probe can withstand the pressure at that depth. Meanwhile Max awakens to find himself in the undersea city of Atlantis, ruled by Princess Diana. At NASA, Ace is reunited with his old Air Academy comrade Sean O'Connor, who still holds a grudge against him since they had an argument over a girl. Diana tells Max her civilization has survived for many centuries since the city sank, and that they want no contact with the surface world, so he, Mei Lee and Jason are to remain there forever. Seeking control over Atlantis himself, Diana's cousin Naro attempts to steal the Venus Probe, leaving Ace to defend the ship underwater, where

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 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.