Marshal Rocca's police station is shaken by the events of Antonio Fait, one of the best men, involved by his drug addict girlfriend in a shady tour. The marshal comes to find out and, together with his group, carries out a blitz in an abandoned paper mill to catch the drug traffickers red-handed, without however finding any evidence. Claudia, Antonio's girlfriend, is accused of having tipped off the carabinieri and beaten by pushers, so much so that she lost the baby she was carrying. Antonio, who returns to the paper mill to take his revenge, is killed there: Marshal Rocca will not rest until he manages to capture the whole clan.