In the time of the great King Arthur, there was an island in the mists called Avalon where, in the shadows of history, the much greater force of magic was used to shape the course of humanity. Anna and Bronwyn, two young Priestesses-in-training, don't know it yet, but they will rule Avalon someday. The only problem? They can't stand each other. Needing the girls to not only be civil to each other but also to learn the essence of teamwork is of the utmost importance to the current High Priestesses. In order to teach the girls to work together, they bind Anna and Bronwyn in magic, then release them into the world and away from Avalon. Their first destination: Camelot, and upon arrival, they find that something nefarious is going on that may endanger King Arthur's life. The girls must resolve their differences in order to save the king and possibly all of England.