Dr. X orchestrates the explosion of a plane to steal a nuclear warhead. With a nuclear battleship about to fall in Dr. X's hands, Action Man makes haste to recover the warhead, aided by his team and Dr. X's former lackey Ursula.
Dr. X captures the Fargo scientists to get hold of the regenerative Extract Herb to gain a fortune out of youth serum. Action Man liberates the scientists, but Dr. X has destroyed all their research.
Dr. X steals an experimental KGB cybernetic android. Disguising himself as an old friend of Action Man the android shoots Action Man who lands in the river and Dr. X believes he is dead. He also leaves Knuck and Natalie injured (Knuck with an injury to his right hand and Natalie with an injury to her right leg). Unknown to them Action Man is still alive and thinking that Dr. X believes he is dead decides to use it to his advantage in order to beat Dr. X at his game at the robotics factory.
Natalie helps Action Man recall some of his past memories, but realise they had followed a false trail to Haven Mount village that Dr. X is holding captive to ensure the destruction of the Xtreme Station. Action Man is able to destroy Dr. X's plasma cannon and save Haven Mount.
Dr. X has stolen a tunneling machine and kidnapped a team of miners for an excavation which to Natalie's horror is being led by her uncle Ian, under blackmail from Dr. X. Thanks to Ian's mine planted on Dr. X's snowcruiser, Action Man manages to destroy Dr. X's acquired lethal PAX 39 gas canisters.
Dr. X has taken a beaker of deadly Red Plague virus and kidnapped Dr. Pandemo who developed the cure. Action Man is lured to Dr. X's underground lab so Dr. X can steal the Jet Xtreme. Action Man liberates the jet and scientist and vanquishes the Red Plague virus for good, but Norris, Knuck and Natalie are infected with the plague so it's all down to Action Man to save their lives.
Dr. X has hijacked a stealth bomber. Dr. X takes the bomber's weapons to launch from the European Space Agency base. Dr. X takes Jacque as hostage, but Jacques turns the tables on Dr. X and puts his satellite out of operation.
Dr. X has a rogue moon launcher set to destroy Earth's cities. After Action Man braves the Gobi Desert hazards, Jacques seeds some precipitation to wash out Dr. X's camouflaged gun bunker and destroy the launcher.
Dr. X kidnaps the American ambassador to brainwash him in order to set up the Action Team. While Knuck and Natalie end up being arrested Action Man goes vigilante to root out Dr. X and clear the Action Team's name.
Dr. X has stolen an anti-gravity device to stage an alien attack on Earth. With the aid of the scientist Professor Mackenzie who invented the device, Action Man destroys the fake alien spaceship while Natalie distracts Dr. X and his Skullmen.
With his Catalyst Crystal plot thwarted, Dr. X sends a dog (which Jacque adopts under the name Raid) to attack Action Man. Jacque uses Raid to track down Dr. X and terminate his Catalyst Crystal missiles.
Dr. X steals Jet Xtreme and kidnaps Secretary Norris and takes over the Action Space Station to start a major war around the world. Operating from base paradise and using his VR Suit, Action Man hacks into the Space Station to drive Dr. X out.
Dr. X and his infiltrator Domichi frame Secretary Norris of corruption and disband the Action Team. The Action Team liberate their equipment and Norris and thwart Dr. X's next shipment theft, thus clearing their names.
Action Man helps Knuck investigate his nephew Tom who has been involved in Gangrene's X-Vitamin steroid tests. Action Man tricks Dr. X into destroying Gangrene's lab and prevents him from putting the X-Vitamin into the city's water supply.
Dr. X steals a Neutron Phalanx Gun and a large amount of Plutonium to destroy the world of its oceans. Action Man recovers the Neutron Phalanx, while Kunck defuses the Plutonium bombs.
Soon after winning a martial arts match, Ursula arrives begging for Action Man to help as she claims that Dr. X is trying to terminate her. He later encounters an assassin named Gem Eye who shares exactly the same voice as Action Man alongside the same "AM" tattoo, but after getting confused Natalie shoots at the wrong person allowing Gem Eye to escape. Learning they both have the same "AM" tattoo, Action Man is led to believe that he and Gem Eye are both members of an assassin cult called the "Acolytes of Mayhem".
While Dr. X attempts to abduct the G7 leaders, Action Man is constantly troubled by how familiar Dr. X's plan feels. A memory flash reveals that it was Action Man himself that came up with the plan in the first place.
A satellite containing important security codes for the World Security Council goes down in a hidden civilization nestled somewhere in the Antarctic.
Dr. X takes control of a fully automated private space shuttle carrying two of the world's richest men.
The Action Team head to Australia to free a group of locals being forced by Dr. X to mine uranium.
Action Man and his team must protect a special fish called the "Puppet Quill" that can emit a special gas. Dr. X needs the fish to create a mind control gas which he plans to use on the world's leaders.
The people of Vulcana Island live in isolation from the rest of the world, but Dr. X earns the locals' trust after saving their island from a volcanic eruption, and manages to make the Action Team and the World Security Council look bad in the process.
Dr. X sends a diversionary attack to Brussels to keep the Action Team busy while he steals and arms a space shuttle from Cape Canaveral. His goal is to take over an abandoned but still armed space station.
Dr. X breaks into a top secret facility in Switzerland with intentions to steal a decryption computer with intentions to steal secret codes and launch a missile in a bid to destroy select points across the Earth. It is therefore down to Action Man and his team to stop Dr. X and his scheme, but for Action Man Ursula is once again involved.
Jacques is invited to join his family for the holidays, however his plans are interrupted when Drt. X attempts to steal a sargovian gold shipment.
After escaping from the destroyed plane before Jacques can land and pick up Action Man and Natalie he discovers his father has been captured and being held as prisoner alongside Secretary Norris at the embassy. Not wishing for his father to be harmed he is therefore forced to abandon Action Man and Natalie and proceed to where they are located, while Dr. X is hoping to acquire Jet Extreme and the wealth of the world. Unknown to Dr. X however who wanted to let Action Man and Natalie freeze to death Knuck drops a package for the duo and together they manage to access and hijack the black shark.
