Northern Italy, 1993: After many years as a policeman in the Questura, Commissario Trotti is ready for retirement. But despite Trotti's stubbornly old-fashioned investigative methods, there are several people trying to talk him out of retirement. Fabrizio Bassi, a reckless private detective who worked under Trotti years ago before being kicked off the force, approaches him for help. Bassi has been investigating the death of a murdered doctor and has a conspiracy theory that extends to the highest reaches of government. When Bassi is found in a ditch with a bullet in his head, Trotti decides to take on one last murder case after all.