Klaus Ballauf and Freddy Schenk have to solve the murder of a young homeless man. Apparently the young drug addict Andi Lechner was poisoned. The bottle of wine he last drank was laced with antifreeze. Was it a targeted attack on him? Or did it just happen to the young man? Their investigations lead the commissioners into the world of people on the fringes of society: "Beethoven", a cultured homeless person, gives them an insight into the scene. He also tells Ballauf and Schenk about a serious argument that Lechner allegedly had with the city cowboy "Django" the night before. Another track leads the inspectors to the well-known plastic surgeon Dr. Norbert Ellermann, who campaigns publicly for the homeless.
What the public doesn't know is that he occasionally had sexual contact with Lechner. became Dr. Ellermann blackmailed? In addition to Ballauf and Schenk, private detective Stefan Meutsch is also investigating in the milieu. For his client, the lawyer Gesine Stürner, he is looking for a homeless person who is supposed to testify as a witness in a case of vandalism. But then a second murder follows the same pattern. Is there a serial offender at work here or was it the act of a free rider? In any case, one thing is certain: resentment towards the homeless is widespread.