Gisela has moved to Schleswig-Holstein, where she investigates for the state criminal police. Hardly settled in, she receives a cry for help from the Harz region. Her old friend Lilly Höschen feels threatened. Two former colleagues have already died under mysterious circumstances, and she fears that she will be the third. Meanwhile, Gisela has her hands full. In her neighborhood, there are men who are being killed by women.