Amidst the ruins of the Brown Kingdom, chaos reigns. The legumes have been destroyed and the Indians and Cowboys, desperate for food, fight to take the Nutri-Pad from the heroes. Alex Grand returns home triumphant. But Theo has an idea that could be the last hope to save the legumes.

The heroes depart full steam ahead on a train packed with Cowboys and the last remaining legumes. Their destination is the Red Kingdom. But the journey is beset by perils, including a flying machine piloted by Nose who is prepared to go to any lengths to stop the train from reaching the last stat...

On their way to the Red Kingdom, the heroes realize their train is about to be flattened by Alex Grand’s huge Imperial Express. A terrifying, high-speed train chase begins, in which it seems that all the endeavours of the heroes, Guardian Brown and Professor Gizmo won’t be enough to save the last...

Whilst the heroes sail in search of clues for the Blue Kingdom, a chance encounter joins Alex, Nose, Fritz and Fritz Junior on the Pirate Galleon, the Terror of the Seas. It is in this mysterious ship that the feared pirate Alexander Bluebeard is reborn, along with his faithful parrot, Pecky. Tog...

After a shipwreck, the heroes are washed up on the coast of the Island of Tremors. Here they find Guga Blue, but also a band of native pygmies who protect and worship him. Theo and his friends will have to come up with a plan to free Guga if they are to discover the location of the Blue Kingdom. ...

The Blue Kingdom lies at the bottom of the sea and the only way to get there is by submarine. To get the submarine, Bluebeard takes Lena and Ben hostage on his ship, whilst Theo and Nina go fetch it from the White Kingdom. But there’s some unexpected trouble in the White Kingdom, where Tina and t...

Whilst Fritz and the G-Squads are stealing the submarine away from the White Kingdom, Theo is being attacked by mechanical sharks and torpedoes in the AquaBauwer race. Lena and Ben are made to walk the plank into shark-infested waters and Alexander Bluebeard sets off in search of Neptune’s Stone....

At the bottom of the sea, the heroes find a giant octopus guarding the second fragment of Blue Stone with its enormous tentacles. After a dangerous underwater encounter, Alexander Bluebeard ends the pact and leaves the heroes trapped on the ocean floor...