The picture of a mysterious, solitary filmmaker - a cineaste maudit - who flees from each the media and the general public, is unrelentingly certain to the determine of Leos Carax, in France. Elsewhere, the actual focus is on his movies and he's thought-about to be an icon of world cinema. Mr.X dives into the poetic and visionary world of an artist who was already a cult determine from his very first movie. Punctuated by interviews and unseen footage, this documentary is most of all a fine-tuned exploration of the poetic and visionary world of Leos Carax, alias "Mr.X".