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.

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.

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.

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.

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.

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. Science Lesson: Pyramids by Max.

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.

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.

While conducting a training exercise, the Centurions come under attack from Doc Terror's forces. Ace is rescued by his old acquaintance, Cassandra Cross, the witch. The Centurions decide to attempt to duplicate her powerful abilities by studying her on board Skyvault. But once connected to Skyvault's computers, she turns off the defense systems and introduces herself as Lilith Cross, Cassandra's twin sister. With no defense systems operative, Doc Terror beams on board Skyvault. Ace manages to escape using the magical white rose given to him by Cassandra, and beams to Earth. He finds Cassandra trapped by Lilith's magic, and frees her. Together, they go back to Skyvault, and attempt to free the other Centurions. Science Lesson: Herbal medicine by Crystal.

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

The countries of Quisto and Montenegro are close to all out war due to a recent attack on Quisto, apparently by Montenegro forces. The Centurions become involved due to the prospect of war threatening to involve the whole world. Max, Ace and Jake go to Quisto, while John and Rex go to Montenegro, where President Cordano tells them that it was impossible for his country to attack Quisto due to their defenses being run by the Def-3000 computer. John recons a supposedly abandoned Montenegran base, but is attacked and captured, while Rex is also abducted. They find that they are now prisoners of Lady Fang, who is in charge of the Def-3000 and wishes to start a war between the two countries, from which she will make a profit as an arms supplier. John and Rex are left to escape from Lady Fang's clutches, and the other Centurions beam to Montenegro in order to prevent war from breaking out. Science Lesson: Spider wart plants by Jake.

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.

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 is testing out his new Swing-Shot weapon system with Ace, under observation by Klaus, the designer of the Centurions' weapon systems. Crystal detects activity from Doc Terror in the Andes mountains, and Klaus tells the team that they'll need Swing-Shot's abilities under his observation. Once there, the Centurions fight Terror's robot insects, but Swing-Shot freezes up in the middle of the battle. Blaming himself for the malfunction, Klaus later attempts to find out Terror's plan for himself, but ends up being captured. Terror informs him that he wants an Incan emerald to power his mega-laser that will be aimed at Skyvault. He also forces Klaus to improve his ground-borg designs to use against the Centurions. Fighting against their own technology, the Centurions must stop Terror and rescue their friend. Science Lesson: Hydro-electric power by Max.

Dr. Harriman, a scientist who used to cut corners with building materials, and now an inmate at the Lunar Penitentiary is broken out by Doc Terror, who wants to use his knowledge of . Rex and John investigate Harriman's daughter Alexis, at her research lab. Terror then attacks the lab, and despite the Centurions' efforts, succeeds in stealing Alexis' new sonic ray. Suspecting Terror had an insider, Rex discovers that Alexis herself is helping him and her father in getting revenge on the World Council of Scientists. John discovers that Terror intends to use the sonic ray to destroy a new dam, but is captured by Hacker. John must figure out a way of escaping and warning the other Centurions before Terror can use the ray to destroy the dam. Science Lesson: Agricultural methods by Jake.

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

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.

A group of Native Americans comes under attack by a giant totem claiming to be a ghost warrior, who tells them to fight against those who have built upon their land. The tribal leaders call in John Thunder, who brings along his fellow Centurions Ace and Jake. While John confers with his people, Ace and Jake are attacked by Hacker. Meanwhile, the giant ghost warrior appears to John and his tribe and brainwashes them into attacking a geological research lab. John tracks down the ghost warrior and finds out that it is really a giant Traumitizer controlled by Doc Terror. Terror traps John, and as his brainwashed victims keep Ace and Jake occupied, Terror attacks the real target: a nearby space port. John must free himself and his people, and assist his Centurion friends. Science Lesson: The Apaches by John.

Ace disarms some plane hijackers working for Doc Terror, who is angered by their surrender. Despairing of the failing of humans, Terror blames Amber for selecting the hijackers, and decides to exterminate all of mankind and replace them with robots. Rex Charger is specially recalled from a skiing trip to respond to a distress signal. He discovers that it is Amber, being chased by Hacker and some Strafers. She tells the Centurions that her father intends to destroy all of humanity this time, and that she wants them to stop his mad plan. With her help, the Centurions track him down to a Florida power plant, and discover that Terror intends to use a weather control satellite to create the biggest storm the world has ever seen. With the storm's strength increasing exponentially, it is left to the Centurions to figure out a way of neutralizing it. Science Lesson: Lightning by Jake.

In Dominion, Doc Terror attempts to turn his dog Brutus into a cyborg, but there is a malfunction that halts the mechanisation process while still giving the dog cyborg strength. With this knowledge, Terror creates the Encephalocaster, a device that can control other animals as well as giving them cyborg-enhanced strength. He uses the device on Skyvault and gains control of the space station with the help of Lucy. Once there, he uses the device to control all animals on Earth. As Jake attempts to deal with a Terror-controlled Shadow, Terror and Hacker prevent the other Centurions from beaming to Skyvault. With the Earth under siege by Terror's super-strong animals, the Centurions must figure out a way of getting to Skyvault and evicting Terror as well as shutting his Encephalocaster down. Science Lesson: Animals' super-human abilities by Crystal.

John Thunder informs the Centurions that his old sparring partner Claw is now working for Doc Terror as a cyborg. Meanwhile, Doc Terror succeeds in creating a dimensional neutron vortex in his base, Dominion. Energy from the vortex is detected by Skyvault, where Crystal determines that the laws of reality will soon collapse. With Terror having stealth and scrambler fields all over the Arctic to hide his base, the Centurions lure Hacker into stealing a vital component for the vortex, and John sneaks on board Terror's airship. John makes it to Dominion, where Claw soon senses his presence and alerts Terror, who then gets Hacker to attack the SETI space probe station in the Andes to keep the rest of the Centurions occupied. Claw captures John and attempts to settle old scores with him. The other Centurions are sent to locate Dominion, but are too late, as Terror's dimensional vortex breaks out of control. Science Lesson: Magnets by Ace.

Terror follows the wandering vortex, attempting to bring it back under his control, while John manages to escape from Claw. The other Centurions, still looking for Dominion, come under attack by their own weapon systems, which are transformed into creatures by the vortex's alteration of reality. Crystal beams them to Skyvault, leaving John still on his own in Terror's Arctic base. John finds a transmitter and contacts Skyvault, but the co-ordinates are unstable as the position of Dominion is not stable anymore due to the vortex. Crystal is able to beam the other Centurions to Dominion, where they meet up with John, who tells them that he still has to deal with his old enemy Claw. As John fights Claw to the finish, the remaining Centurions must figure out a way of destroying Terror's vortex before all of reality is destabilized. Science Lesson: Continental drift by Crystal.

Doc Terror observes scientist Marina Abbot's ship heading out to sea and sends out sea-borgs to attack it. The Centurions are sent to defend the ship, while Marina summons help from a giant lobster. After the battle, Marina explains to Max that she has taken over her father's research, but wishes to keep it secret. The ship heads to the research base Neptune-1, and the Centurions observe the giant lobster and a giant turtle first hand. Marina tells them that the creatures are to be used by the World Council of Scientists and that each one can be controlled with an implant. She swears not to have her work destroyed by Doc Terror like her father's early research. Ace is later trapped by Marina, who tells him that she wants to lure Terror to the island and take revenge against him for her father. As Terror begins transforming the creatures into cyborgs, the Centurions arrive to defeat them. Science Lesson: Swan ships by Max.