Dr X reveals his latest invention, a giant robot designed to clean Technopolis.

When dragons attack King Kenric's castle, everyone wonders what can be done to stop these fire-breathing monsters.

The heroes stop the evil plans of the Wizard Fourchesac, but when he repents to King Kenric, the traitor takes advantage to use a potion and change places with him.

After an accident, the Chameleon runs out of fuel.

MindNet, the computer that is supposed to solve all the problems in Technopolis, has found the solution: Expel all the humans.

Princess Leonora is about to marry the mean Black Baron; Alex, Ruby and Gene must put a stop to it, while Twinkle has her work cut out as the maid of honor.