Letizia is a young girl, daughter of the singer Mimmo Rotunno, who has lost her mother and is now raised by her widowed father. Letizia does not look favourably on the relationship between her father and Mercedes, trying in every way to oppose it.
One day, Letizia befriends Mirella Argenti, a beautiful girl who is engaged to the conductor Paolo. She decides to introduce Mirella to her father, with the intention of making him fall in love with her. To achieve this, Letizia organises a ruse to get Mimmo to perform in some shows in Ischia, hoping that this will bring him closer to Mirella and change the course of things.