Rex Gildo’s songs and musicals made him very popular. His best-known song was “Fiesta Mexicana” from 1972. Rosa von Praunheim tells the story of his life in the context of the gay pride movement, the normative pressures of the Schlager music industry, and the profound changes currently underway.

1831. A village schoolteacher Matthias Spitzbart dreams of the ideal school and writes a textbook on the perfect educational institution. When he becomes principal of a grammar school by chance, he puts his ideas into practice. His almost missionary-like zeal blossoms in wondrous ways, but his family idyll is deceptive. Entangled in his activities, Spitzbart fails to see his wife's affair with pro-rector Mehlmann, daughter Friederike flirts with the trainee teacher, and son Michael's misdeeds are enough to make a mockery of his efforts at exemplary behavior. Teachers, parents and the mayor are of the opinion that he has upset everything that worked before: he is dismissed...

Each year in June, Bavarian housewife Elke Richter visits family in Halle, in the GDR. There she meets family friend Gregor Pohl, a married carpenter, and they begin having an affair. After her family stops the annual visits due to the husband's promotion in the communist regime, the adulterous couple arranges to meet on other holidays. After Gorbachev's Glasnost leads to the fall of the Iron Curtain, everything changes, and Gregor chooses to emigrate to Canada.