Allie is ecstatic when her parents, traveling professors who specialize in King Arthur's legend, tell her she will be staying at Avalon High until she graduates. She can finally join the track team, make new friends and be a normal high school student. But shortly after arriving, Allie discovers that something strange may be afoot. While researching a term paper on King Arthur's legacy, she begins to notice some interesting parallels between the past and the present - from handsome quarterback Will, his cheerleader girlfriend, Jen, and their best friend, Lance, to Will's brooding step-brother, Marco, a quirky kid named Miles and football players who act like knights of the roundtable. The deeper Allie searches, the more convinced she is that her school is a contemporary Camelot, and it's up to her to solve of the mystery of Avalon High before notorious traitor Mordred wins again.