The Dark Realm — Terri J. Taber

Have you ever wondered where the elves, fairies and other mythical creatures went after the fall of King Arthur? What if you found out that some of them lived among us... That you might even be one? That is what Melissa Star had always wondered. Melissa moved to the small town of Ely, Nevada to live with her step-father and on her first day at her new school she meets an enchanting young man named Jason Marks. Jason takes her to a magical planet filled with the creatures of Myth and she discovers that she is a descendant of Arthur Pendragon and she must defend the planet from an evil warlord bent on controlling her and everything around her.