For ages, the Frostborn and Emberkin have been locked in a brutal war fueled by an ancient curse that has turned them into enemies. Prince Kael, branded a traitor for daring to question the war, fled to the frozen wastes of the Frostborn, only to find himself on the brink of death at the hands of Lyria, a Frost warrior whose faith in warfare was beginning to falter.

Against all odds, she saved him.

Their fragile alliance morphs into a desperate quest to uncover the truth about the curse, a quest that leads them to the Heart of Equinox, a relic capable of breaking the cycle of hatred when wielded with fire and ice together. But the war has left deep scars, and not everyone desires peace. Hunted down by Frostborn and Emberkin as traitors, Kael and Lyria must confront the Splitting Star, the forgotten god who cursed their people, and determine if their love is strong enough to rewrite destiny.