Young Renzo and Lucia, living in a mountain village near Lake Como, dream of a wedding, but on the eve of the long-awaited day, the priest informs them that the wedding will have to be postponed. Bandits sent by the local feudal lord Don Rodrigo threatened him with violence. The betrothed are forced to flee their homes. Renzo goes to Milan, and beautiful, meek Lucia takes refuge within the monastery walls, but they do not even realize that Don Rodrigo has not at all abandoned his intention to get the rebellious beauty at any cost. The lovers will face serious dangers: long separation, wanderings and other misadventures up to prison and plague, but the guiding star will still show them the path to happiness.