in 1414 Rachel (now a young woman) is living with her adopted father in the city of Constance. The forces of the Holy Roman Emperor Sigismund have defeated the Hussites, in battles where Prince Leopold has distinguished himself. The Council of Constance, convened by Antipope John XXIII, has been arranged to resolve Church matters. John XXIII is represented there by Cardinal Gian Francesco Brogni, who was a historical personage. His part in the story of the opera is, however, entirely fictional. Act 1 A square in the city of Constance in 1414 Eléazar is a goldsmith. The crowd condemns him for working during a day dedicated to Church festivities. He is saved from a lynching by the arrival of Brogni, who in the process recognises Eléazar as his old adversary. Prince Léopold arrives in disguise as a young Jewish artist Samuel. Rachel is in love with Samuel and knows nothing of his true identity. Local laws reflect prejudice against the Jews: if a Jew and a Christian have sexual relations, the Christian is excommunicated and the Jew is killed. Léopold is thus taking a great risk in this affair, especially as he is already married to the Princess Eudoxie. The crowd returns to attack Eléazar, but 'Samuel' secretly instructs his troops to calm things down. The act closes with a grand triumphal procession. Act 2 Inside the house of Éléazar Rachel has invited 'Samuel' for the Passover celebration in Eléazar's house. He is present while Eléazar and the other Jews sing their Passover prayers. Rachel becomes anxious when she notices that 'Samuel' refuses to eat the piece of unleavened bread that she has given him. He reveals to her that he is a Christian, without telling her his true identity. Rachel is horrified and reminds him of the terrible consequences of such a relationship. Princess Eudoxie enters to order from Eléazar a valuable jewel as a present for her husband, at which point Samuel (Prince Léopold) hides. After Eudoxie leaves, Léopold promises to take Rachel away with him. She tries to resist, worrying about abandoning her father, but as she is about to succumb to his advances, they are confronted by Eléazar, who curses Léopold before the latter runs off. Act 3 Magnificent gardens Rachel, who has followed 'Samuel' to the Palace, offers her services as a lady's maid to Princess Eudoxie. Eléazar arrives at the palace to deliver the