A political struggle is furthered by a love triangle; Fenena, the daughter of Nabucco, the King of Babylon is in love with Ismaele, the nephew of the King of Jerusalem, while Abigaille, the half-sister of Fenena is also in love with Ismaele. While the war rages between Babylon and Jerusalem, Abigaille tells Ismaele that she will save all of his people if he vows to love her. He refuses and after also learning that she is not a true daughter of Nabucco, she declares vengeance against Fenena to ensure that she take the throne instead and to ensure she will never have to see Fenena and Ismaele happy together. Plotting against Nabucco, Fenena, and Ismaele, Abigaille ruthlessly plans to take down the kingdom, take over, and kill all the imprisoned Israelites.
Nabucco guide sections