Siface, re di Numidia
King Siface plans a political marriage with Viriate but falls in love with Ismene, who loves his general Erminio. Siface schemes against Viriate and forges evidence to imprison her. Moved by Viriate’s forgiveness and freed by Orcano and Erminio, he abandons his cruelty, restores Viriate as queen, and accepts the union of Ismene and Erminio.