Journalist and man-about-town Marcello struggles to find his place in the world, torn between the allure of Rome's elite social scene and the stifling domesticity offered by his girlfriend, all the while searching for a way to become a serious writer.
During the Spanish occupation of Naples, the people led by Tommaso Aniello - known as "Masaniello" - plot against the Viceroy. The Viceroy's son, under another name, has a son from Masaniello's sister, but his father has already planned a marriage for him with a Spanish patrician against his wishes.
Called to perform at the Scala, a young baritone begins a transatlantic romance with a famous pianist. The singer, having been skewered by a critic after his last performance in Milan, attempts to find a way to win over the audience and the critics, while wooing his love interest.
An American starlet inflames two Italian peasants who forget about their respective fiance's. One of them even thinks of marrying her and begins to plan for the engagement banquet. When the girl decides to live the countryside harmony reigns again.