When Louis refuses to share his bed with her, Marie Antoinette realizes that producing an heir will not be straightforward. She turns to Madame du Barry for help but a rivalry begins to form between the Favorite and the Dauphine.

The royal family spends some holidays in Fontainebleau. Marie-Antoinette learns about du Barry's plan, who looks for a fiancée for Provence. Will the second pretender to the throne of France be able to birth the Bourbon heir before Louis and Marie-Antoinette perform their duty?