Jerusalem mourns its defeat, which places its fate in the hands of Nabucco, King of Babylon. Ismaël warns them that Nabucco is approaching the Temple. He remains alone with Ferena, the daughter of the Babylonian king, who has been taken hostage by the Hebrews, and confesses his love for her. However, Ferena's sister, Abigaille, also loves Ismael. In this new production, Arnaud Bernard sets the plot in the aesthetic context of the Italian Risorgimento. When it premiered at La Scala in Milan in 1842, Nabucco was an immediate triumph. In an Italy then in the throes of nationalist movements, the audience immediately identified with the Hebrews held captive in Babylon. The chorus of slaves, "Va, pensiero," thus became one of the most famous arias in the history of opera.