Reinhold Schünzel plays the strict and moralistic Traugott Bellmann, who publicly denounces the decadent nightlife. Although Bellmann's views are backed by his wife, they are vehemently opposed by his champagne-manufacturing father-in-law. When Bellmann inherits 500,000 marks and the notorious nightclub "Der Himmel auf Erden" ("Heaven on Earth") from his deceased brother, he finds himself in a difficult situation. In order to fulfill his brother's will and claim the money, Bellmann is required to be at the club every night at 9 pm.