In 1745, Empress Elizabeth Petrovna is infertile. Her only heir is her weak-minded nephew, III. Peter. Elizabeth cannot allow Peter to ascend the throne, so she decides to marry the heir apparent, await the birth of her son, and then take the child to raise him as a true Russian emperor. The brides arrive in St. Petersburg, including the charming Fike from a poor branch of the Prussian kings and the young princess Sophia Frederica. The girl dreaming of a fairy tale is far from great love and happiness. She goes to mysterious Russia. However, she is doomed to face the conspiracies of palace members and spies, the ruthless palace intrigues, the empress's cruel calculations, and her future husband's indifference. She and her future children are in deadly danger. To defend her dream of love, Catherine will have to escape the power of those trying to destroy her. Catherine begins her fight for the throne, but will she find happiness?