The future of the world now rests in the hands of just three flawed individuals: Tiaan, whose knowledge holds the key to a power that can yet destroy all foes; Nish who has sworn to bring the renegade geomancer to justice; and Irisis, whose great talents are hidden even from herself.
Now Tiaan is leading her people in a last desperate stand against the Lyrinx... but if they are to survive she must master her new powers or be destroyed...