With Louis still not consummating the marriage after four months, Marie realizes that producing an heir will not be straightforward. She turns to Madame du Barry for support and advice. However, after discovering more about the woman's past, Marie is shocked, and 'her friend' becomes a foe. There cannot be two queens at Versailles, and du Barry is not about to disappear.

Marie Antoinette is just a teenager when she leaves Austria to marry the Dauphin of France. At Versailles, under the complex rules of the French court, she suffers from not being able to live her life the way she wants, under pressure to continue the Bourbon line and secure the Franco-Austrian alliance.