Rome in the 1970's, a city given to the mafia from the complacent politicians. If not colluded, the city becomes a theatre of business scandal, managed by hidden, criminal powers, in to which a man from the cupola of Cosa Nostra, Pippo Calò;, arrives. He has the ability to increase the mafia activity hundredfold in very little time through a new criminal organisation, called Banda della Magliana. One look, however, can interrupt the plans of economic extortion, and this comes from Mino Pecorelli, a journalist from the tabloid OP, who seems to have on hand material that will scupper the mafia's projects. Through new field research and unpublished interviews, Pecorelli's critical voice seems to be interrupted by the boys that, at this time, rule the districts of Testaccio and Trastevere in Rome. OP - Osservato Particolare is an investigative film that wants to expose the underworld, in which the turbid power of criminality moved, and in which the murder of Pecorelli matured. Starting ...