Allie Pennington, the daughter of two medieval literature scholars, transfers to Avalon High and becomes involved in a prophesied re-staging of Arthurian legend. Allie meets various new people who she later discovers are the reincarnations of figures from the legendary Camelot. She befriends two boys: Will, a quarterback and most likely the reincarnation of Arthur, and Miles, who has psychic flashes and is most likely the reincarnation of Merlin. There's also a third boy, Marco—Will's stepbrother—whom Allie believes is the reincarnation of Mordred and determined to kill Arthur (Will), which would send the world into ''another'' dark age.