"Moon has spent his life hiding what he is--a shape-shifter able to transform himself into a winged creature of flight. An orphan with only vague memories of his own kind, Moon tries to fit in among the tribes of his river valley, with mixed success. Just as Moon's true nature is once again discovered and he is cast out by his adopted tribe, he encounters a shape-shifter like himself... someone who seems to know exactly what Moon is, who promises...

"All his life, Moon roamed the Three Worlds, a solitary wanderer forced to hide his true nature -- until he was reunited with his own kind, the Raksura, and found a new life as consort to Jade, sister queen of the Indigo Cloud court. But now a rival court has laid claim to him, and Jade may or may not be willing to fight for him. Beset by doubts, Moon must travel in the company of strangers to a distant realm where he will finally face the forgotten...

A former friend has betrayed the Raksura and their groundling companions, and now the survivors must race across the Three Worlds to rescue their kidnapped family members. When Moon and Stone are sent ahead to scout, they quickly encounter an unexpected and potentially deadly ally, and decide to disobey the queens and continue the search alone. Following in a wind-ship, Jade and Malachite make an unlikely alliance of their own, until word reaches...