Once upon a time, in a faraway land, there was a kingdom. In this kingdom, a few people had magical powers such that they could subtly change the fabric of the universe with only a thought. Centuries ago, a wizard had taken the throne, and since magic was inheritable, the kingdom had ever since been ruled by magic-users.
The king and queen had wanted a child for many years, and finally it happened. Everyone expected the new little princess to grow up to be a powerful wizard, but as the years passed, the king and queen and all their servants never noticed something strange, never found her flying in her sleep or surrounded by cute animals who were suddenly tame. The king and queen worried and fretted and hoped that she was just a late bloomer and her magic would suddenly grow. The servants whispered and gossiped and thought the girl might be a changeling, or maybe the queen had been unfaithful, and whichever case was true, certainly a magicless girl could not be a true princess.