en Cuevana 3. Full of anticipation, the young and ambitious Commissioner Carsten Lanner (Florian Lukas) is moving from Berlin Cloppenburg in Lower Saxony for a further education. However, he did not expect the outspoken chutzpah of the Berliners and, above all, the rude nature of his colleagues, who in no way received him with open arms. And so he slips more accidentally than wanted shortly after his arrival in Berlin in his first case.