The scene opens with the Duke of Castile offering his sister, the Duchess of Castile, a toast. He asks her to choose between two glasses of wine, but she refuses, saying that she has already had too much to drink. The Duke asks his sister if she would like to drink with him, and she replies that she would, if he were present. She then asks him to let her drink with her brother-in-law, the Prince of Castile's bodyguard, who is also present. He refuses to allow her to do so, and the Duke says that he will bring his bodyguard with him