In a bid to forge an alliance between nations, the Empress of Austria orchestrates the marriage of her daughter, the spirited yet pampered Marie Antoinette, to the future king of France, Louis XVI. Upon her arrival at Versailles, the young Austrian princess encounters Oscar François de Jarjayes, the Royal Guards' Captain—a seemingly gallant man who surprises her by being a woman in disguise. Oscar, raised as a boy due to her family's lack of a male heir, struggles with the constraints of her dual identity. Charmed by Oscar's enigmatic persona, Antoinette befriends her in search of companionship amidst the stifling courtly protocols. As the naive queen abuses her authority, Oscar grapples with her conflicting loyalties to the crown and the suffering populace. Despite societal pressures dictating their roles and stifling their individuality, Antoinette and Oscar navigate a tumultuous path, shaping their destinies and leaving an indelible mark on history.