Arthur and the Invisibles: The Game is an action-adventure based on the mostly animated film from director Luc Besson who also wrote the children's books it originated from. It follows the film's storyline after the live-action part where a boy must save his grandmother's house from a greedy developer by finding a treasure that his grandfather went missing in searching for it in the magical land of the tiny Minimoy. When the boy Arthur enters a portal to their land, he shrinks in size and changes his appearance so he becomes like a Minimoy also. Arthur and his two friends, Princess Selenia and her brother Bétamèche, try to save the Minimoys from certain destruction.