A young woman is chased through the Usedom Forest and falls into a trap, with her pursuer close on her heels. The scene turns out to be survival training that the loner Ivo Klose offers to 18-year-old Fabienne Leppin. At the same time, Karin Lossow discovers dead puppies in the forest while walking with her dog Lucky. She informs Holm Brendel, but the police are currently at major construction sites: Jana Leppin, Fabienne's mother, is missing. A large pool of blood in her car indicates a violent crime. Suspicion quickly falls on Ivo Klose, who has already served a long prison sentence for manslaughter and who Jana Leppin was afraid of. Jana Leppin was an employee of a nursing service. While Inspector Rainer Witt questions the employees, clients and the manager Elena Herzog, the discovery of the dead puppies gives Karin Lossow no peace. She asks Rainer's son Ben to post her self-made video of the site on the Internet in order to investigate the police - to the displeasure of Usedom's new public prosecutor and Rainer Witt's partner Katharina Stozek. In order to avoid a conflict, Karin temporarily moves into the holiday apartment of Jörn Scherer and his daughter Lara, who are currently building Karin's new home on Rainer Witt's property. But then Jana Leppin's body is found at the "puppy cemetery" - and suddenly Karin Lossow finds herself in the middle of a new case. Did Ivo Klose again take someone's life on his conscience so soon after his release? Or did Jana Leppin possibly learn something from the nursing service that should remain secret at all costs? On the way to solving the case, in addition to the new arrivals, two well-known faces find themselves at Karin's side.
—ADR Das Erste