A Camorra boss fakes his own death in order to start a new life elsewhere with his family, but a nurse happens to see him alive and well after the funeral. A hitman is promptly sent to get rid of her, only to find out that she's his first and unforgotten love. He decides to protect her, becoming himself a target.

After his handler is killed, police dog Rex teams up with recently-divorced inspector Richard Moser to investigate crimes and solve mysteries on the streets of Vienna. And they sometimes get help from their two-legged friend, Inspector Stockinger.

Set in Naples at the end of the 19th century, I Guappi tells the story of a strange friendship between the powerful and charismatic Camorra boss, Don Gaetano (Fabio Testi), and one of the many scugnizzi who grew up on the streets, Nicola Bellizzi (Franco Nero). Nicola, thanks to Don Gaetano's protection, becomes first an honoured picciotto of the Camorra and then a lawyer. He tries to break away from his 'family', but falls back into a life of crime and violence.