When Natalie finds a strange candy wrapper floating in a parking-lot puddle, an ominous yellow-eyed man informs her it's a spell -- and a bewitching tale of kidnapping and sorcery unfolds.This mysterious encounter leads Natalie to an enchanted world called Earthaven, where spells hang from giant soul trees and magical Spell Lords can cast them. Natalie is astonished to discover that she belongs to this world -- and that now she has to save it. The sinister Lord Hawk, exiled to the human world, is planning his revenge against the Spell Lords. Only Natalie suspects he's developed a poison to kill the soul trees -- and only Natalie can stop him.

With the help of a loyal magehound, a herd of unicorns, and the spirit of her dead mother, Natalie must do battle with an evil force determined to spread its power across both worlds.