The psychiatrist Simon embarks with his newly wed Paula on a wedding trip to Marmorera, the home of his ancestors. The body of a young woman is found on the shore of the reservoir. A little later, the same woman - alive but without an identity - was taken to the Psychiatric University Clinic Burgholzli in Zurich, where Simon works. The idea of ​​the film is based on a true story: in 1954 the entire old Marmorera was demolished and flooded to prevent protests against the planned dam above the village. Only the cemetery with the bones of the dead was moved.

Tatort is a long-running German/Austrian/Swiss, crime television series set in various parts of these countries. The show is broadcast on the channels of ARD in Germany, ORF in Austria and SF1 in Switzerland.