In the part of the world known as the Bay of Sorrows, two great powers, Aupana and Sellexu, are on the brink of war. Foxes is charged with delaying the Sellexun invasion by holding the last forgotten border fort between these two ancient enemies. But Foxes has been raised to know that the war between two human armies isn't the end game, and that there is an unseen power that threatens more than nations. For these things, and more, Foxes is driven to seek out the truth of the encroaching threats and expose them to the light of day, dragging her friends and allies along with her in an attempt to save their world.