The Children of Amarid have discovered that invaders from Tobyn-Ser's sister land of Lon-Ser are responsible for the deadly attacks on their people. But as their order is paralyzed by infighting, the next invasion is just around the corner. To prevent this, Orris journeys into the heart of Lon-Ser, where he will find technological marvels and industrial terrors, as well as an extraordinary woman whose actions will either save him or lead to an all-out war.