The single mother Caterina Schöllack takes over the management of the Galant dance school on Kurfürstendamm ("Ku'damm") in Berlin after the end of the Second World War. The father of their three daughters did not return to the family after the war, he is officially missing.
Four years after the murder of a 14-year-old schoolgirl, fate strikes Nordholm again. A dead man is found on the beach & his wife and daughter have disappeared without a trace. Only the youngest son of the family suddenly turns up at home. Simon Kessler of the Hamburg CID starts the investigation.