At Hasnerplatz in the Graz district of Geidorf, suspicious individuals are loitering, believed to be petty criminals distributing drugs to young people at the local playground to recruit them as future customers. All signs indicate that the substances originate from a distribution center in Andritz. Additionally, a house on Theodor-Körner-Strasse is at the center of the investigation, as it is highly likely that illegal trafficking of girls is taking place there. When a man is found dead on a park bench near the playground at Hasnerplatz, the criminal department for personal safety, led by Chief Inspector Mader, faces a complex and challenging investigation, to which he also involves a newly arrived colleague from Leoben.