A fairy tale of the misadventures of a beautiful but temperamental Neapolitan peasant, Isabella, when she meets the ill- tempered Spanish Prince Rodrigo Ferrante y Davalos. The King of Spain has ordered Rodrigo to choose a wife among seven Italian Princesses, but he is smitten by the lowly peasant.

In Naples at the end of the 19th century, Nicola Bellizzi dreams of becoming a lawyer. However, when he seeks the reason that people are reluctant to help him in his goals, he discovers that some of his blood relations are high-ranking members of the Mafia. He tries to break away from his family obligations, but falls into a life of crime and violence.

In this evocative, atmospheric biography, Roberto Rossellini brings to life philosopher and mathematician Blaise Pascal, who, amid religious persecution and ignorance, believed in a harmony between God and science.