Music Box Films and Beta Cinema present a production of Senator Film Production and Deutschfilm in co-production with Warner Bros. Film Productions Germany and Seven Pictures ; in co-production with Erfttal Film, Goldkind Film, HerbX Film, Magnolia Film, Summerstorm Entertainment, CC Medien ; a film by Philipp Stölzl ; produced by Christoph Müller, Helge Sasse ; directed by Philipp Stölzl