Married young, unloved and humiliated by her husband, Princess Sophie Dorothea of Hanover meets the Swedish Colonel Philipp Christoph Königsmarck in 1690. This marks the beginning of a passionate affair that ends with her banishment to a country estate on the Aller River. For thirty years, until her death, she must live there in complete isolation, while her husband ascends to the English throne as George I, her daughter becomes Queen of Prussia, and she gives birth to a son who will go down in history as Frederick the Great.