World peace is at stake if a spy-ring obtains the electronic device

The tragedy of a woman who - after seven years of vain searches - gave up hope of finding her husband, a knight lost in battle in Marroc with Sebastião, king of Portugal. She marries, has a daughter by her second husband, and endures the silent reproach of an aid, Telmo Pais, the only who kept his hope that his master shall return, as well as the king... One day, a mysterious pilgrim arrives at the mansion.

The ill-conceived loves of Rosa, a modest seamstress, and Fernando a doctor, leaving in the shadow the fateful passion of António (a liberal) for the young woman.

To get away from the boredom of the city, Henrique de Souzelas visits his aunt Doroteia, in a picturesque village in the North, where he becomes attracted to his young, beautiful cousin Madalena.