Robert Karow (Mark Waschke) is called to a crime scene. Everything indicates that the young police officer Rebecca Kästner (Kaya Marie Möller) has taken her own life: Drugs, custody dispute, excessive demands. The dead woman's last phone call was to a former LKA bigwig who now teaches at the police academy: Susanne Bonard (Corinna Harfouch). Before Karow knows it, she is placed at his side to investigate the case. The detectives come across connections to the right-wing scene.