After the renovation of the castle and the ringing of the bells, Henri is recognised as the rightful master of the Castle of Corneville. He gives a feast for the whole village, and his guests rejoice. Gaspard, who has lost his reason, wanders from group to group, singing. Serpolette is assumed to be the Vicomtesse of Lucenay, because the page from the birth register of the village, noting the births of Serpolette and Germaine, has disappeared (Gaspard had st olen it). Grenicheux has become factotum to the Vicomtesse Serpolette and is now courting her.