While working in the greenhouse, Patrick Teichmann discovers the corpse of his mother-in-law Heike Teichmann. Garden worker Juri flees, the murder weapon in hand, and is the first to be targeted by investigators Gorniak and Winkler. But the victim's daughter, Nadine Teichmann, is also a potential perpetrator. Because the inspectors experience a family business at the scene of the crime, which seems far removed from a peaceful coexistence of three generations under one roof. There is also no question of marital harmony between Nadine and her husband Patrick Teichmann - they are about to separate. Events take a new turn when an important witness is eliminated and the autopsy reveals that Heike Teichmann suffered from Broken Heart Syndrome. She must have been in an emotional state of emergency recently. With their psychological sensitivity, the inspectors track down the truth - which leads far back into Heike Teichmann's past. Now her daughter Nadine, who was just a suspect, has to fear for her life. Karin Gorniak and Leonie Winkler are challenged to a breathless race, which finally has a shocking discovery in store for them.
—ADR Das Erste