A supermarket is robbed. Commissioner Karl Jäger, who happens to be present, shoots the robber and is subsequently suspended from duty because the attacker’s weapon is not found. The incident also plunges Jäger into deep psychological problems. As a result, commissioners Lola Kraft and Jasmin Stein are called in when two bodies are discovered during the night of a class reunion at the Calw Hermann Hesse High School. All 29 party guests are considered suspects. When the investigators find out that their suspended colleague was a former classmate, his memories help advance the solution to the case, which has its origins in their school days.

Detectives Karl Jäger and Lola Kraft are investigating again. An inconspicuous family man saves a young woman from being raped and uses unexpected skills that not only attract the attention of himself, but also of the police. But it is not just his mysterious past that troubles the amnesiac victim, but also a killer squad. Who is after him? And what is the mystery of his past?

Chief Inspector Karl Jäger is preparing for the birth of his grandchild, while his colleague Jasmin Stein is thrown into a passionate love affair. But Lola Kraft is also back after her maternity leave when the body of a car dealer is found in a villa. The safe is open, but apparently no money was stolen. What was so valuable that the son of a Russian mafia boss had to die?

The brutal murder of a retired judge draws detectives Lola Kraft and Jasmin Stein into the case. Was a former "client" of the victim out for revenge? Meanwhile, Chief Inspector Karl Jäger faces entanglements within his own family that escalate into a direct confrontation with a drug lord. The explosive finale unfolds at the "Badischer Hof".

Through an inheritance, a group of friends find out that their grandfathers had found crates of gold in the wreckage of a crashed plane in the final days of the Second World War. A short time later, the men were killed and the gold was never found. Now the gawky grandsons are trying to recover the treasure. In the process, they come up against crooks, speculators and old and neo-Nazis.