In Dortmund's Westpark, Jan Pawlak and Rosa Herzog stand in front of a large pool of blood, but there is no body. However, Andreas Richter, the head of a Dortmund real estate company, is missing. His business model has made him a number of opponents in Dortmund in recent years: he buys up properties in the Kreuzviertel and transforms shared apartments into sought-after luxury properties. In his personal life, he is currently divorcing his wife Natalia. She doesn't leave her husband in good stead either.

While Inspector Peter Faber has not yet come to terms with the death of his colleague Martina Bönisch, is on sick leave and is more or less living in his old Manta, Jan and Rosa come across Faber's father Josef. He and Faber apparently haven't had any contact for decades. What happened between father and son and what does Josef Faber have to do with the case?

When Peter Faber joins Jan Pawlak and Rosa Herzog early in the morning, the forensics team has almost finished their work. Tram driver Hamza Arkadas was stabbed during his night shift. There are no witnesses, but the images from the surveillance camera show how Arkadas was first provoked and then attacked by a young passenger. The perpetrator showed his face offensively into the camera before fleeing, but the recordings are of little help at first. He doesn't seem to be known to the police, and public prosecutor Matuschek doesn't want to go public with the pictures yet.

Rosa Herzog, who took over as acting head of the homicide squad in Faber's absence, gets support from police officer Beate Gräske. She is a “super recognizer” with the special ability to recognize faces – much better than her colleagues and the technology can do. With the help of surveillance cameras, she tracks down the perpetrator...

Chief Inspector Faber is back on duty, but his job as head of the homicide squad is gone for now. And prosecutor Matuschek wouldn't mind if nothing changed. Faber's colleague Rosa Herzog is now taking over the management on an acting basis. Chief Inspector Jan Pawlak, on the other hand, apparently has little interest in his job. Instead, he prefers to have fun in Alkim Celik's betting shop "Mutluluk" (Turkish for "luck").

When Celik's brother-in-law Lukas Becker is found dead, the "Mutluluk" suddenly becomes the focus of the investigation. An old acquaintance of Faber's is now back on the scene: Tarim Abakay . This time Faber doesn't want to let him get away with it. But his sleuthing doesn't remain without consequences for long: Faber is intercepted by Ira Klasnic and her two armed companions in the parking lot in front of his father's nursing home. Did Abakay send them?