The sons of a music-loving insurance broker take extreme measures to find happiness for themselves and others, with some help from the power of music.

While happily engaged to Rosalia, Tony has the misfortune of falling for a vibrant pilot named Valeria — and that’s just the beginning of his problems.

A university student, Mario Buongiovanni, tries to do various jobs to pay for his studies: selling encyclopedias, singing in night clubs, being a tour guide. He then became a science teacher in a female college, where he met Lisa, the daughter of a Lombard industrialist, whom he fell in love with. But Lisa's father, unfortunately, already has in mind for her a marriage with a very rich suitor ...

Andrea falls in love with the beautiful Rosetta, but the girl's father pushes her into the arms of the rich Giorgio. Al Bano and Romina in a musicarello of extraordinary success.