McBride concludes the Celtic-inspired romantasy duology begun with A Fate Forged in Fire, as Aemyra rallies her troops - and protects her heart - in anticipation of the final battle to save her kingdom.

Aemyra Daercathian is a queen on the run. Having failed to take Àird Lasair and betrayed by her husband—whom she grew to trust and was beginning to fall for during her time in captivity—Aemyra is forced to retreat with a raging desire for revenge. But before she can settle the score and fulfill a sacred promise to kill Fiorean, her forces must rest and replenish their strength.

No one can know the truth. Even though Aemyra has a fierce dragon and a large army of elemental wielders called Dùileach standing behind her, she has lost what's most important to her—her fire magic. Haunted by her love for her enemy, and unsure if she is even goddess-blessed anymore, Aemyra vows to do right by her people. Even if that means she must make a new kind of alliance, one that could mean winning back her kingdom. At a cost to her heart...

From the ashes, Aemyra must emerge a new kind of queen, but will she be the dawn for her people or the fire that burns everything to the ground?