Chief Inspector Frank Reuter has his hands full. He has 30 cases waiting for him that have occurred along the Baltic Sea - between the German-Danish border and Lübeck. In Timmendorfer Strand, he must investigate the death of a beach boy, while in Maasholm, fishermen are at odds with each other. He even has to prove his skills on Fehmarn at Flügger Strand. Reuter takes on these cases to make the Baltic Sea a little safer again.