Enrico Caruso's (Mario Lanza) only passion is to sing. For that, he leaves his hometown of Naples, Italy, and travels to America to sing for the Metropolitan Opera. At first his lack of education and poor background make him an outcast in the high-class opera world. Eventually, his amazing voice wins him both fans and the hand of his love, Dorothy (Ann Blyth). But his nonstop pace and desire to perform at any cost eventually take their toll on the singer's health.