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.