Master of fantasy, illusion, dizzying plots, Luc Besson, director of “The Fifth Element,” “Nikita,” “Abyss Blue” and other wonderful films, creates a new fairy tale. This is his debut in children's literature, and this fairy-tale story has it all - secrets, riddles, chases, treasures, magic... What diabolical plans is Urdalak going to carry out in order to conquer the new world to which he has moved by deception? How can Arthur, who remains in the world of the minimoys, be able to defeat the cruel Horrible U? In order to preserve the love of the beautiful princess Selenia, Arthur is ready to fight against Urdalak both in the world of the minimoys and in the big real world...