Armino Fabbio works as a tour guide for a travel company. Together with tourists, he travels by bus from one Italian city to another. He likes this way of life. But unpleasant events that happen in Rome (a beggar woman is murdered near a church, and Armino recognizes her as a servant who once worked in his parents’ house) force the hero to leave his job and return to Ruffano, the town where he spent his childhood.
There, unexpectedly, he finds a brother who had been considered dead since 1943. Though this meeting can hardly be called joyful. Aldo, a university professor, lives in a world of his own fantasies, imagining himself to be Duke Claudio, nicknamed the Falcon, who lived in Ruffano several centuries before the present events and kept the entire town in fear. This boundary between the present and the future, fiction and reality, so thin at first glance, turns out in fact to be so strong that only death can break it.