In a sleazy cigar and newspaper store in Rome, an old newsagent nicknamed "Papa Re" sells his wares, warmed only by an earthenware heater that his granddaughter brings him each evening. One day, the stove falls from his hand and breaks into a thousand pieces. The same evening, when he opens the kiosk, he finds inside a woman, huddled up, with her little daughter in her arms: it is Rosalba Vignas, a singer-songwriter who has been chased away by her lover, Cesare le Milanese, who fell in love with his younger colleague.

Released from prison after 20 years, Canio finds his daughter adopted by a wealthy family and about to marry. When he meets Leoncavallo, the composer is moved to create one of history's greatest operas.