Kill an heir, claim their magic. Subei and his brothers have been raised on stories of the Great Khan, their ancestor who conquered the world with might, mind, and fearsome magic. But the Great Khan is long dead, and his power vanished. The brothers live by his laws still, even as infighting consumes their once-proud people. When a sacred artifact is destroyed in an attempt on their lives, Subei, Bataar, and Kashi find themselves imbued with slivers of the Great Khan's magic-and they're not alone. Under the tutelage of a famed commander and the guidance of a stoic monk, the brothers are ordered to hunt the other heirs and claim their magic for the khanate. With each kill, they grow stronger. But the magic that empowers them is no mere tool. Something ancient, alive, and angry dwells within it.
