Dr Michael Reidinger, the renowned chief physician of the Marien Hospital in Regensburg, has disappeared. His father Horst Reidinger accidentally bumps into Inspector Lucas, who takes on the case. When Reidinger's car is found openly under a railway bridge, the team works flat out to find the missing man, but initially without success. Shortly thereafter, Ellen Lucas finds Horst Reidinger critically injured in his homeson. Ellen Lucas senses that there must be more behind Reidinger's disappearance and quickly finds it, because against Dr. Reidinger and the clinic had filed a class action lawsuit from a patient initiative for non-compliance with hygiene standards. hospital manager dr. Lindner rejects any guilt. Judge Gerhard Huber, who rejected the lawsuit, also remains silent, saying that there is no evidence of a hygiene deficit in the hospital. 

He secretly watched them, filmed them, even when they were sleeping. Now he's asking for three million. For not killing them, the children of the successful pharmaceutical manager Eva Steiner (Nina Kunzendorf). Eva Steiner turns on the police and Inspector Lucas (Ulrike Kriener) takes over. There are still four hours until the money is handed over. Not enough time to prepare everything in detail, Lucas has to improvise. The transfer of money turns into a fiasco. Eva Steiner and the blackmailer, Dr. Robert Dohnen (Ben Braun) get into a shootout and collapse badly injured. Dohnen is Eva Steiner's brother-in-law, and until three months ago he was also her most important employee: head of the research department. The motive for the blackmail seems clear: revenge for the unintentional release shortly before the conclusion of amillion deals.
With her new employees, Commissioners Alex Eggert (Anna Brüggemann) and Tom Brauer (Lasse Myhr), Commissioner Lucas sets out to work through the failure and comes across a number of inconsistencies. What is the real reason for Dohnen's dismissal? What role does the multi-billion dollar merger of Eva Steiner's company with a Swiss pharmaceutical company play? And where did the weapon come from that injured Dohnen and Eva Steiner? When the inspectors discover a connection between the extortion and the murder of a petty criminal, Lucas has to investigate whether the mastermind behind the events, the real culprit, is not to be found in his own ranks. This is also supported by the fact that viral bullying and defamation are spreading within the team.