Guido Renzi and his lawyer friend chase a beautiful girl to return a purse that he lost and after a long drive in the car reach the laboratory of an improvised astrophysicist - the girl's father - who, together with another scientist, is about to take off in the direction of Mars aboard a missile.
In Italy, in 1736, Pergolese is in love with Maria. But Maria's brother, Count Raniero, forbids his sister to marry a modest composer. Pergolese kidnaps the young girl, but they are caught. Maria is locked up in her castle while Pergolese dies in the convent that takes him in.
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 Italian industrialist who has made a fortune in America returns to Italy planning to make a film about a beautiful woman who smiled at him before he left his home country years before.
