The Viennese detective children Biggi, Patrick and Luke find a key in dragon form, and their curiosity is aroused. They realize that the sinister Lady Q is interested in opening the legendary moon palace and find the elixir which is … Helena Siegmund-Schultze, Bruno Schubert, Justus Kammerer, Iris Berben, Stipe Erceg, Soogi Kang, Simon Schwarz Added on Netflix 2022-04-06. Youtube Trailer