Tony is a young Neapolitan musician. He has a lot of problems and a past with drugs, but also with women. He is engaged to Susy, but he betrays her with a university professor, who has an invalid husband, but also with other young aspiring singers, who try in every way to break into the world of music. Among these there is Elena, engaged in various difficulties to organize a concert with the best names of Neapolitan music.