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 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.

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 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.

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

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.

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.