She is the most powerful woman in the western world: Empress Adelheid. By the side of Otto the Great, she decides the fates of the Reich. The high price she had to pay for the crown is her greatest secret. But then her son Otto II marries the beautiful Theophanu. The Byzantine princess brings luxury, exoticism and refined customs from Constantinople to the German court. When Theophanu too reaches for power, an embittered conflict begins...