Score, Helaine, and Pixel approach the powerful center of Tiara; they are now on Dondar, a beautiful planet where the sky is purple and blue grass and inhabited by intelligent unicorns. This is also inhabited by a hostile magician and magical monsters, who are determined to destroy the three young magicians. But the decisive battle that must engage the trio is coming when they face the Triad, the masters of the tiara that hide a terrible secret and who want nothing less than the soul of the trio.