Face the High Priest. Face him alone. That was why she was back on O. To end the religion grown up in her name.
Susan Ferris and her cousin Nick return to the world of O, which they had saved from the evil Halfmen, only to discover that a hundred years have passed and O is now ruled by cruel and ruthless priests.
Susan is inspired by the dreams and prophecies related to her, to face the most dreadful dangers and free the inhabitants of O.