In ancient Babylon, SEMIRAMIDE (Anderson) encourages her lover Assur (Ramey) to murder her husband, King Ninus. Her son, Ninius, disappears, believed dead, and Semiramide rules in her own right. 15 years later, as the opera opens, she is about to announce the name of her successor. Idreno (Olsen) and Assur are the leading candidates for the throne and the hand of Princess Azema (Shin), but Semiramide has taken a fancy to young Arsace (Horne), her victorious military leader who has been summoned back to Babylon. Only the high priest Oroe (Che...