A 15-year-old mute girl, suspected of having been raped, is placed in a shelter. But is she really the helpless teenager everyone sees in her ?
Helene is forced by her wicked stepmother Gertrud to do works impossible to done. When she builds a castle for her with the help of the fairy Cleo, there is only room for Helene, in the cellar. One day, Prince Lassmann ride near the castle.