Inspector Nardone is an authentic and straightforward Neapolitan, endowed with a strong moral code and a great sense of humour and humanity. After having previously exposed corrupt colleagues, Nardone is re-assigned to the Milan Police Department where he has to deal with a rapidly changing post-war crime scene. The rules have changed and Nardone must fight to restore law-and-order in the sophisticated and urbane Milan. A city which, nevertheless, Nardone loves unconditionally. Based on a real-life figure, Mario Nardone was a legend in Milan during the 50s and 60s.