1. Some youngsters kill their teacher; but they won't tell their motivation. The police detective on the case feels some sinister influence behind the young murderers.
2. About the search for an adult who pushed a classroom full of troubled teens to gang-rape and murder their female teacher. A hard-bitten Police Inspector named Liberti is put on the case and sets about brutally interrogating the young punks. He finally settles on a blond boy named Fiorello as the one most likely to squeal, but when he jumps from a rooftop, Liberti knows there is more to the teacher's murder than meets the eye.

After returning to Catania after a long period of time, Giuseppe reunites with his old lover, Caterina. Her 15 year-old daughter, Graziella begins to seduce her mother's lover and he soon breaks down and begins an affair with her. As time passes Caterina begins having sneaking suspicions about Giuseppe's & Graziella's relationship.

A bomb attack in a cinema in Palermo kills all the fellows of Attardi's clan a part from Cocchi. He immediately understands that the author of the bomb attack is Daniello from Don Corrasco's clan. Cocchi is determined to revenge. His actions, including the Corrasco's daughter kidnap, in a Palermo in which also the police is corrupted, will soon destroy the old equilibrium giving the way to an escalation of violence that won't save anyone. If Cocchi will survive to the mafia war he will be the new boss for sure.

A man is arrested and condemned to five years in jail for robbery. After serving his term, he is out for revenge on the gang members he considers were to blame for his arrest. The prize for this deadly fight is a large cache of diamonds.