After a bloody revolution, the long-enslaved people of Sileria are free at last. However, this vast island nation which dominates the Middle Sea now plunges into civil war as quarreling factions and bitter rivals vie for ultimate control of Sileria. The Guardians of the Otherworld -- the mysterious fire sorcerers who once ruled Sileria in peace and prosperity a thousand years ago -- must now challenge the supremacy of the feared Honored Society and its notorious water wizards, who will destroy the newfound nation in their quest for absolute power.

Mirabar, the young Guardian whose visions led her people to rebellion and freedom, is betrayed by those whom she trusts most and finds an unlikely ally among her worst enemies. Torn between vengeance and prophecy, Mirabar struggles with an impossible choice. Tansen, the warrior whose coming was foretold by the gods who visit Mirabar's dreams, must now lead the disparate peoples of Sileria into a new era -- if he can survive the deadly revenge of both his enemies and his allies. He alone can ensure the fulfillment of Mirabar's prophetic visions.

When mystical sea spirits, a volcano goddess, and half-human subterranean sorcerers all demand a stake in Sileria's fate, then Mirabar, Tansen, and their allies must finally choose between love and duty, between history and destiny.