I misteri di Mercurio

Nina, Lori and Jamal are at the Louvre on a study trip, but something is wrong: Jamal is doing his utmost to avoid his two friends. While they’re talking about it in front of the Virgin of the Rocks, they hear the now-familiar flapping of wings, heralding a new adventure. And so they find themselves in Urbino, in summer 1502, in the presence of the great Leonardo da Vinci who entrusts them with the task of destroying one of his most dangerous inventions before Cesare Borgia, known as Valentino, can find it. With soldiers hot on their heels, can our heroes complete the mission and, most important of all, bring their close-knit trio back together?