Rike and Max embark on a pilgrimage while Inspector Lucas is called to a scene. A man has holed himself up in a café and is threatening to shoot himself and the hostages present. With the courageous intervention of Commissioner Lucas, the catastrophe is averted and all the hostages are freed. Only Christel Huber cannot be reassured. Her daughter Anna was in the café but has not reappeared. The 20-year-old girl has disappeared and the inspectors start looking for clues.
Inspector Lucas and her team find out that Anna is not the good, middle-class girl that many believe. All means seemed right to Anna to escape from the suburban fug of Regensburg. Only her father Heinz knew thathis daughter dreamed of another life. Father and daughter have a strangely symbiotic relationship. Christel Huber, on the other hand, is horrified when she learns of her daughter's secret dreams. Then detective Lucas discovers that Anna is having a secret relationship with the up-and-coming politician Jan Geissler. Geissler's fiancee, Sylvia Hohenfeld, also knew about her husband's "slip," as she puts it. Inspector Lucas realizes that she must first clarify the family background in order to make progress in the search for clues. In the end, it turns out that Anna was closer than everyone thought all along. The grueling search for clues is over, but can Commissioner Lucas save the girl from her kidnapper?