1898. The "Golden Vienna" enjoys a vibrant social life and a flourishing fine arts scene. But suddenly the capital becomes a stage on which a mysterious killer plays out a bloody drama... More and more mutilated corpses are found by the police in the Prater amusement park. Servants of the law are trying to grab hold of any thread - and this thread becomes the connection of one of the murdered with the great Gustav Klimt. The police are ready to take on this version - the scandalous bohemian artist is perfect for the role of a criminal. However, Klimt has friends. And among them are the brilliant lawyer Karl Werten and the legendary criminologist Hans Gross. They begin their own investigation in order not only to exonerate the artist, but also to find the real killer...