- 1817 - Opera buffa Don Magnifico has been appointed by Dandini as the supervisor of his cellars and with the aid of the men of the court, writes a decree stating that the wine should not be watered down. Dandini asks Cinderella to marry him. However, she declines, confessing that she is actually in love with his "valet". The Prince overhears her, and comes forth with his own proposal. Cinderella tells him that he must find out her true identity before she can consent to marry him, although she loves him. She gives him a bracelet which matches one she is wearing. Dandini, in the meantime, confesses to the girls' father that he is a mere valet and not a prince at all, and so cannot marry any of his daughters.
Scene 2
The Prince and Dandini, this time as their true selves, seek refuge from a storm (brought about by the incantations of Alidoro) in the Baron's home. While they are there, Clorinda, Thisbe and the Baron order Cinderella around to provide for the Prince's comforts. However, the Prince notices the bracelet that she wears, which matches the one he cherishes from the beautiful stranger at the ball. The Baron and the sisters do not understand the situation and are rude to Cinderella, whereupon the Prince threatens them.
Scene 3: the Prince's palace
All is made clear to the Baron and his daughters. They are granted the Prince's pardon through Cinderella's intervention, and the opera ends happily.