His curiosity about a book called The Codex of Flowering Butterfly ends in a chance encounter with an alien device used by the Dark Suns. Diego flees to the camp of the Mexica where he confronts his greatest fear as he trains to become a Light Dancer and face the Mind Jewel. Can he overcome his past and his fears in time to help the Mexica drive the Dark Suns from their land? And what of the strange prophecy that states a war will start in this world and end in another? As Diego is drawn deeper into the conflict between old enemies, he finds that knowledge is his best ally.