In 14th-century Genoa, where different political fractions are at war. Paolo Albiani has the valiant corsair Simone Boccanegra, a righteous and sage man, elected Doge.
The political conspiracies, in the opera's plot, are closely knit together with the tragic events in Simone's life: he has lost both the love of his life and their daughter, and must constantly defend himself from his enemies' attacks. The true protagonists of Verdi's opera, however, are not the social and political events: but rather a pervading sense of tragedy and melancholy, and the characters' intricate psychology.