Kai (Julius Gause) can't live with his guilt and wants to shoot himself. Maggie (Karoline Schuch) saves him at the last second. She wants to give her brother the chance to work together to find the people behind the unimaginable crimes and make amends. In order to stop the series of crimes, the ex-policewoman sets out in search of the key figure: the "Great Hunter". A trail leads back to 1947, when two men came under suspicion of having committed gruesome murders. One of the suspects was Maggie's now 90-year-old father Arthur (Volkmar Kleinert), the other disappeared a long time ago. Together with Roland (Felix Kramer), Maggie uncovers a disturbing family secret.

SoKo Krewlow is on the hunt for Marek Gorski (Adrian Topol), who has gone into hiding, but a deadly trap awaits the officers in his trailer. Meanwhile, mysterious men have taken control of the Polish boarding school. Pupil Ilona (Nicola Magdalena Lüders) fears for her life. On the run, she discovers a mysterious prisoner (Liliom Lewald). He promises to help if Ilona frees him. Roland Voit (Felix Kramer) is certain: there must be more than one perpetrator! When Gorski demands money from Demko (Jan Krauter) for his escape, the police team drives to a remote drop-off point. However, Maggie Kring (Karoline Schuch) and Voit see through the ruse. A fight for life and death begins with the "Great Hunter", in which Maggie outgrows herself - and makes a fatal decision. (Text: ARD)