Set in late 18th-century France during a period of social upheaval and the prelude to revolution, the narrative centers on Oscar François de Jarjayes, a woman raised as a "son" and known for her distinctive charisma and resilience. Oscar, who often presents herself in male attire, finds her destiny intertwined with Marie Antoinette, the Austrian-born queen of France. The story explores themes of loyalty, identity, and societal expectations, delving into Oscar's relationships with key figures in her life. Among them are André Grandier, her devoted childhood companion and confidant, and Hans Axel von Fersen, a charming and intelligent Swedish count. Their intricate emotional dynamics reflect the complexities of human connections amidst the backdrop of political tension and impending revolution.