A series of murders shakes Frankfurt. Three men are shot in the neck and there is no connection between the victims. Since it is about two "non-Germans" and a homeless person, one initially suspects a perpetrator from the right-wing milieu. But Commissioner Murot from the LKA Wiesbaden has a different suspicion. He believes that the first two murders were only there to make it look like a series of murders, while the perpetrator was really only interested in the third victim: Jochen Muthesius. The homeless man was a former philosophy professor who also taught Murot. At a time when dreams of a better world and the "principle of hope" were still alive. It was different for Muthesius. After a family tragedy, he lived on the streets for years.
And yet he still owned a villa in Kronberg and a considerable private fortune. The three children of the dead man become the focus of investigations: Paul, an eccentric solo entertainer. Inga, a psychotherapist. And Laura, who set up a foundation for the needy with her father's money. While Murot's assistant Wächter is more and more convinced that Murot is getting lost, a new suspect appears: Jürgen von Mierendorff, a neighbor's son and friend of the Muthesius family, but now a member of the right-wing scene. When Murot realizes that several of the suspects are in league with each other and that he only has a chance if he plays them off against each other, he goes on the offensive: in order to lure her out of reserve, he tells her to kill him...