Two races native to the world of Taan, one human and one alien, overcome human invaders from earth. The Prince of Taan, Khian, is a lonely and aloof warrior trained to battle the usurper earthmen. Elana is a young girl raised in the Sisterhood, a society of women devoted to peace--while Leith, apparently a Taan warrior, is actually an earthman trained by the Sisterhood. Leith and Elana convince Khian that war against the technologically superior earthmen would be suicide. Then Elana contacts the elusive race of Stonewraiths, who can control matter and tumble buildings. With Khian at the head of the warriors, and using the power of the Stonewraiths, the earthmen are subdued and all Taan is united. Elana heads the Sisterhood and Khian becomes emperor of Taan, but the price is their separation. Suspension of disbelief must be at its most willing for this fantasy to work: there are too many unlikely coincidences, changes of character, and convenient master races. Moreover, the book is freighted with messages about the peacefulness of women and the violence of men, rape of resources, and racial conflicts. But the narrative is skillful and carries the reader briskly along.