A police inspector is called to Milan to investigate a murder case since he grew up in the same ghetto as the suspect.

Now an agent of Interpol undercover, the former Inspector Giraldi, goes to New York to find his friend Salvatore Esposito, aspiring restaurateur in Little Italy, suffocated by debts with the usurers headed by Don Gerolamo. He will remove the gang and assure her of justice, but she will suffer the advances of the Boss's daughter, the ugly Maria Sole.

Undercover cop Nico Giraldi travels to New York and Las Vegas to find a crooked cop who gave his squadron back in Italy a bad name.

Adventure comedy directed by Bruno Corbucci.

Franco is abandoned by his wife and daughter who wrongly accuse him of being a wimp. Besides he's bossed around and sexually harassed at work. He decides to take justice into his own hands and get rough with the world. He soon gets his family's respect back.