After the death of his wife, the veterinarian Sebastian Brunnen and his daughter Kira move from Berlin to a small Moselle town to try a new beginning there. Barely arrived, he is confronted with a dramatic case: Because Sebastian has been diagnosed with the pathogen of a dangerous disease in a broodmare on the equestrian farm of Katherina Mohr, the responsible medical officer will also take precaution to euthanize the healthy horses of the farm. While the two get closer to each other privately, Sebastian realizes almost too late how lonely and unhappy his daughter is.

Pferdenärrin Katherina steht kurz vor der Hochzeit mit Bürgermeister Daniel