Princess Mononoke meets Avatar: The Last Airbender.For hundreds of years, the flame-wielding Embers have been the last line of defense against the nightmare creatures from the World Apart, but the attacks are getting worse. Kole Reyna guards Last Lake from the terrors of the night, but he fears for his people’s future.When Kole is wounded by a demon unlike any they have seen before, the Emberfolk believe it is a sign of an ancient enemy returned, a powerful Sage known as the Eastern Dark.Kole has never trusted in prophecy, but with his people hanging on the precipice, he reluctantly agrees to lead the Valley’s greatest warriors in a last desperate bid for survival. Together, they will risk everything in search of a former ally long-thought dead, and whether Kole trusts him or not, he may be the only one capable of saving them.