The story of "King Lazzarone" Ferdinand I of Bourbon whose pastime was to neglect the government and disguise himself as a poor man and turn to the infamous city premises in search of love adventures. With the De Filippo brothers to complete.

Colonels, majors, lieutenants: all of them live in the same building. Some of them have a wife or children or none, but everyone has his orderly. Major Penna is harassed by Osvaldo's mother. Lt. Martucci gets involved in the love affair between Antonio, his orderly, and Lauretta.

Two middle-aged bachelors use the same apartment for their romantic meetings.

Gabriella, a maid, wears a jewel at a dancing party which belongs to her mistress, and when it is stolen she is accused of the theft and sent to jail. Some other maids organize a search party for the real thief who seems to be a moustached youth who continually sings a popular song.

Ugo meets the 18-year-old Renata in the hostel where she is staying. He falls in love with and leaves with her for several romantic places until the money ends. Ugo will try to get the girl engaged on a local TV station, but Renata falls in love with a manager.

The quaint life of Ottavia, a widow living in Rome, is turned upside down when a young and pretty Japanese girl knocks at her door, claiming to be the daughter of her late husband, an Italian military officer who went to Japan on a secret mission during WWII and reportedly killed in action there.

In post war Italy during the fifties it is very difficult to find a house to rent and a family ends up living in a former brothel.