The New York Times–bestselling author of Fireborn and Starborn returns to a magical fantasy realm where warriors of the light fight for everlasting peace.

Liberated from exile, the brutal god Nezu is leveling his vengeful wrath against the blessed lands of Alba, and only three heroes stand a chance of stopping him. Fireborn Allegria, with her ability to harness the power of light; her Starborn lover, Hallow, who leads the society of mages; and Deo, a warrior born of both worlds . . .

But the circle of friendship is broken when Allegria is imprisoned in the spirit world of the Thane. Surrounded by long dead warriors bent on revenge, her grasp on the mortal realm is fading. Now she must fight to hold on to the memories she has left—and the hope that help is coming from a world away.

The ultimate battle between good and evil is breaking, and Hallow and Deo need Allegria to win it. But even then, how can they achieve the impossible? For it's not just one destructive god they must face, but also his creator. Only an arcane prophecy and the untried power of their joined magics can save the Fourth Age.