Adolfo Cocchi has a building firm but his plan to build a set of buildings is been stopped by an old former Garibaldian, Don Leopoldo, who refuses to sell his property. A group of young people go to his house to play and sing. Marcella, Cocchi's daughter, who has a beautiful voice, goes to visit Leopoldo and falls in love with Paolo. They have an idea: open a night-club called "Io bacio... tu baci"...

A grown man named Augusto escapes from an orphanage and after several unsuccessful attempts at holding down a job, decides to start a gang and make a living by stealing from the rich.

When a promising record company president is arrested, his daughter takes over his company to promote her own rock and roll music by promoting various young singers.