In the 18th century, a young German princess, Catherine, is sent to the court of Russia to marry the future Tsar, Peter III. Dazzled by the opulence and power of the court, she slowly realizes that her new home is a place of intrigue and danger. Her relationship with her husband is anything but idyllic; Peter, a weak and carefree man, is more concerned with life's pleasures than with ruling, leaving young Catherine in a precarious position.
As Catherine delves into Russian politics and culture, she begins to develop her own character and ambitions. The young woman becomes a master in the art of manipulation, using her enemies to her advantage. Her life takes an unexpected turn when she falls in love with an intriguing nobleman, leading her to question the sacrifice of her freedom in a marriage imposed for political reasons.
In a world where betrayal and seduction are common currency, Catherine faces increasingly difficult and deadly decisions. The struggle for power and control over her own destiny will lead her to become one of the most notable figures in Russian history. The film explores the limits of love, ambition, and sacrifice, in a visual extravaganza that combines elegance with the drama of a court filled with secrets and intense passions.