The second case of Thorsten Lannert and Sebastian Bootz begins with a drug investigation operation: a police officer and two suspected drug dealers die in a shootout, and one is critically injured. The latter, however, turns out to be an undercover investigator for the LKA. A deadly mistake? Lannert and Bootz get caught between the fronts with their investigations - drug investigation versus state criminal investigation office. The drug investigators were deployed at extremely short notice due to a tip from an informant; large amounts of cocaine and a corresponding amount of money are secured in the room. LKA man Mendt therefore suspects that the drug investigators wanted to enrich themselves with the loot. A theory that Lannert seems quite conclusive.
Bootz, on the other hand, who is rooted in the Stuttgart police, knows two of the police officers involved and cannot imagine them getting involved in crooked business. Lannert respects Bootz's assessment. Basically. But the investigation results increase his suspicions as Bootz tries to maintain loyalty to his colleagues. But the recording of the undercover investigator secured at the scene of the crime poses a mystery and gives the inspectors food for thought.