Mario Esposito, who sings in a Neapolitan restaurant, is in love with Assunta, the niece of Teresa, the owner of the place. He shares his apartment with Michel, his best friend. This one has fallen under the spell of Lolita, a gorgeous adventuress he met at the cathedral where he officiates as the organist. But things go awry as, while Michel intercedes with Aunt Teresa for Assunta's hand in his favor, Mario in turn falls in love with Lolita. On the very day of his wedding with Assunta, Mario runs away with Lolita, thus betraying both his love and his friend. But it does not take long before the young singer realizes the big mistake he has made.

Adolphe and his daughter Gisèle successfully run a fashion house. Left behind, Gisèle's husband decides to open his own business .

In Italy, in 1736, Pergolese is in love with Maria. But Maria's brother, Count Raniero, forbids his sister to marry a modest composer. Pergolese kidnaps the young girl, but they are caught. Maria is locked up in her castle while Pergolese dies in the convent that takes him in.

Remember when Julie Andrews in The Sound of Music says "Every time God closes a door, He opens a window?" Well, this is basically the same philosophy followed by a sage authority named Professor Azais. Though he is never seen in the film, Azais's influences dictates every move made by Le Baron Wurtz (Max Dearly), a private tutor. Though he suffers quite a few setbacks, Wurtz presses on, armed by the Azaiz philosophy that every time something goes wrong in one part of the world, it is balanced by something going right elsewhere. This "law of compensations" pays off in big laughs for the audience, and in a happy-ever-after for Wurtz. Azais was based on a play by Georges Berr and Rene Verneuil.

A joyful and thrilling adventure takes place, bringing happiness to all involved.

A Russian exile, believing herself to be a widow, remarries in Paris and sees her first husband appear.