"Grauzone" is the film by Fredi M. Murer that anticipated the 1980s movement in 1978. A mysterious epidemic haunts Switzerland. The symptoms: a sudden urge to go outside, sudden melancholy, general sensitization. An unintentionally published advertisement informs about the wave of illness and triggers uncertainty, which also penetrates the uniform suburban idyll of Zurich. Julia and her husband Alfred live here, who, in addition to his work as a commercial employee, leads a double life as an eavesdropping specialist and is increasingly plunged into a crisis of meaning.