While on holiday, sharing an evening meal with their family in their favourite Japanese restaurant, Aaron and Stella doze off and awaken to find themselves in the mysterious Land of the Mind. A world in turmoil, the Land of the Mind is being pulled apart by warring factions who have it teetering on edge of complete destruction. Chosen by an invisible Supreme Ruler, it is up to Aaron and Stella to bring order back to this world by recovering the ancient Book of Understanding.
Travelling through strange lands, meeting fantastic characters and pursued by the minions of the Black Queen, the forces of evil are closing in, determined to stop the children from restoring peace to this place.
Aaron and Stella realise that they are the key to the Book of Understanding's return and that time is running out. But how can two children manage to defeat all the forces against them?