The story of the film (known as Arthur and the Invisibles in English) follows 10-year-old Arthur Montgomery, a clever boy living with his grandmother in a rural farmhouse in the early 1960s. The Quest Begins
Arthur befriends the Minimoys, particularly Princess Selenia and her brother Bécassine. Together, they must face the terrible King of the Minimoys, Maltazard, who seeks to conquer the human world. Arthur must use his imagination and courage to help the Minimoys save their kingdom.