At the Schubertiade in the Bregenzerwald, a sinister incident occurs - a society lady is murdered, and a valuable cello disappears without a trace. Inspector Ibele investigates in the splendid inns of Schwarzenberg. He encounters wealthy concertgoers and boisterous peasant boys, and despite his years of experience, he is more than challenged: the inclinations of a traditional costume fetishist put even the down-to-earth Vorarlberg inspector in a tight spot.