The heroes arrive in the Red Kingdom and encounter a land full of castles, princesses and mysterious knights. In this medieval world, they discover new powers to combat the terrible Alex Grand.
To protect the Red Kingdom from the destructive power of the fearful dragon, the heroes have to take part in dangerous challenges and fierce jousting tournaments. But the greatest danger of all may come from where they least expect it...
In the midst of battles and betrayals, the heroes gain the help of an unexpected ally but lose the Nutri-Pad. Alex offers a reward for their capture and in their escape, the heroes venture into the slippery Kingdom of Fats.
Even with all the guards from the Kingdoms of the Round Knights out hunting for them, the heroes have to walk into a trap and take part in the dangerous Rally of the Fried Kingdom, if they want to recover the Nutri-Pad.
Alex Grand is furious and decides to burn all the Kingdoms of the Round Knights with the dragon’s fire. Now, the heroes have to race against time to avoid the catastrophe.
Alex Grand orders the dragon to destroy the Kingdom of Meat. Whilst Lena, Nina and Genevieve help Guardian Red’s army defend the Kingdom, Theo and Ben embark on a dangerous flight to break Alex’s control over the Dragon.
Alex Grand wants to destroy the meat at all costs. That’s why he returns to Grandland and gathers an army of G-Squads to attack the Red Kingdom. Whilst Lena, Ben and Nina help Guardian Red prepare the defenses.
In order to rescue Guga Purple from the Dragon’s Lair, Theo, Genevieve, Guga Red and Nose have to cross a jungle inhabited by pre-historic animals. Lena, Ben and Nina remain with Guardian Red to try to stop Alex and his army of G-Squads.
Alex Grand and the G-Squads have practically destroyed the whole of the Red Kingdom. Guardian Red, Fit Phil, Lena, Ben and Nina try desperately to protect the people and the last remaining food.