Budapest in the thirties. The restaurant owner Laszlo hires the pianist András to play in his restaurant. Both men fall in love with the beautiful waitress Ilona who inspires András to his only composition. His song of Gloomy Sunday is, at first, loved and then feared, for its melancholic melody triggers off a chain of suicides. The fragile balance of the erotic ménage à trois is sent off kilter when the German Hans goes and falls in love with Ilona as well.
Oliver and the much older photographer Hendrik are a couple. A rather contrasting couple: Hendrik has already achieved a lot in his life and is considered an 'old hand' in his profession. Oliver, on the other hand, is only at the beginning of his career as a photographer and has retained a childlike naivety and playfulness in his life plans. Oliver and the young Silvia meet at a photo session. It is immediately clear to the ambitious Silvia that Oliver is her springboard to a modeling career. That same evening, Hendrik proposes to Oliver. But Oliver makes an almost unfulfillable condition: He wants a child! Hendrik is completely at a loss. What should he do? Then Silvia bursts into his house. All she really wants is to be photographed by Oliver. But things turn out differently...
After Martin Lamm's wife Esther announces that she hired someone to kill him, the famous writer's life changes rapidly. Just hours later Esther is found at the bottom of a river.
