Janusz disappears during a high school graduation party. Marlin, a classmate, calls the police to report him dead before he himself is run over on a country road. Since evidence suggests a violent crime, Leonie Winkler, Karin Gorniak and their boss Schnabel from the Dresden Criminal Investigation Department begin searching for the student and investigating. His classmates remain silent - no one claims to have seen or heard from Janusz again.

Collecting debts is his job. And Fabian Pavlou is very good at it. He is considered one of the most successful field staff at the international company Correct Inkasso. But now Pavlou was brutally attacked on his way home. When the inspectors Max Ballauf and Freddy Schenk arrive at the crime scene, there is no trace of the victim. Did one of the debtors the debt collection manager recently dealt with take revenge - or did he see no other way out? For example, there is the tax clerk Stefanie Schreiter, who is facing a wage garnishment because of her ex-husband's debts. Or the completely indebted masseur Timo Eckhoff, who can no longer pay his electricity bill. Or the married couple Monika and Jost Lehnen, who are facing the foreclosure of their home... Then the colleagues from the manhunt call in. They have located Pavlou's cell phone. At a motorway rest area near Cologne. But the point on the map is moving. Max Ballauf immediately starts to pursue him...

Sebastian Bootz is among the guests at a film premiere in Stuttgart when the screen suddenly goes black and a man and a woman threaten the audience with guns. Panic breaks out, several people manage to flee, shots are fired - and a security guard lies dead on the ground. When Sebastian Bootz grabs his gun to stop the hostage takers, he is threatened and shoots the man. But the perpetrators are not deterred. Bootz is disarmed and, along with the remaining guests, becomes hostage of the two unknown men. Because he managed to contact Thorsten Lannert unnoticed, he is one of the first to start work in the operations center. He and the members of the crisis team are working feverishly to find out who the hostage takers are, how they can be stopped and further deaths prevented. Much depends on the cooperation between the two inspectors and this must now prove itself from a distance.

In broad daylight, a man is shot dead from a great distance by a sniper in the center of Berlin, near the Friedrichstrasse subway station. Susanne Bonard and Robert Karow are under pressure - and under observation: Preparations are underway for a major state visit to Berlin and the Senator for the Interior is worried about the murder. Public Prosecutor Taghavi demands that the matter be clarified as quickly as possible.

In a rental property in Kiel, Klaus Borowski and his colleague Mila Sahin find 40-year-old insurance clerk Andrea Gonzor shot dead on her bed. Andrea Gonzor had apparently invited people to an erotic party that evening. Numerous traces of semen around the dead woman indicate that the victim had apparently had several sexual partners that night. There are traces of alcohol and tranquilizers in her blood, but there is no evidence of a sexual crime. Borowski and Sahin delve into the world of sex and love addicts. The only key to solving the problem seems to be Andrea's friend Nele. She discovered the dead woman.

Saarbrücken, deep in the night. An explosion shatters the silence. Sleepless Chief Inspector Pia Heinrich is the first on the scene: a security guard was killed in a brutal robbery of an armored car. When Chief Inspectors Leo Hölzer and Adam Schürk arrive, they are presented with a disturbing scene left behind by a massive explosion. What does the number sprayed on the street mean? Does a trail lead to an internationally wanted criminal gang in neighboring France? Chief Inspector Esther Baumann activates her contacts with the French police. Or does the surviving security guard know more than he admits? The team has barely begun their investigation when events take a dramatic turn and Pia is in danger...