Author: Carlotta Rindone. A new magical adventure begins for Wais and Melody that will take them aboard an extremely original and futuristic vehicle. They will discover ancient Greece, the Magnetite mines of the island of Elba and will fly to the North Pole where they will meet Caterina, an Italian researcher who will guide them to the discovery of the spectacular Northern Lights. All this in the company of their friend Sphere and... Lara, Wais' dog, who this time didn't want to stay home!
 But how many trials will they have to face? And what clue will they bring home this time? The resolution of the mystery that involves them is ever closer!
 Thanks to the special contents the reader will experience first hand his journey to discover magnetism! Inspirations to do at home, a story by Eng. Nuccetelli on the extraordinary history of the mines of Elba Island that can still be visited and insights into magnetism.