Stanislas, the heartbroken king, and the spirited Madame de Boufflers. The opening of the book sets the stage in 1750, detailing the somber mood at the court after the tragic events of 1749, which included the death of Madame du Châtelet and the departure of Voltaire. Stanislas, the aging king, isolates himself in grief, accompanied only by his pets, until the efforts of courtiers, particularly Madame de Boufflers, lead him back to societal engagement through festivities and entertainment. Amidst the vibrant carnival atmosphere, characters such as the witty and dedicated Madame de Boufflers emerge as central figures, working to revive the royal spirits and restore the lively culture of the court, which had been overshadowed by tragedy. (This is an automatically generated summary.)