Gismondo, rè di Polonia ossia il vincitor generoso
Polish king Gismondo and Lithuanian duke Primislao seek peace through the marriage of their children Otone and Cunegonda, who are already in love. When the negotiations are sabotaged, war resumes and Primislao is presumed dead. Cunegonda seeks revenge, but Otone’s sister Giuditta has secretly rescued Primislao; peace is restored.