During a fire, Pina is saved by her young cousin Enrico, who is blinded by the flames. The girl becomes Enrico’s guide, and the two earn their living as street musicians. Pina falls in love with Count Manlio, who sets her on the path to a singing career. For the sake of success, she abandons Enrico, but years later, overcome by remorse, she decides to leave Manlio in order to care for her cousin once again.