Marie Antoinette is just a teenager when forced to leave Austria to marry Louis, the Dauphin of France. She must deliver an heir in order to secure an alliance between the two nations, but she is unprepared for the royal family that awaits her.

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?