17-year-old Zayla Eldabright is not the devil’s spawn, no matter what Mommy Dearest says.

She’s just the only pyromancer born since the fire-wielding moon goddess Nyxas murdered the sun three decades ago. Fellow sunworshippers vilify her for Nyxas’s crimes, her own mother included. Consequently, survival in their underground city hinges on hiding her deadly skill as much as avoiding the world’s monster-infested surface.

But when the city’s last sun-magic starts to die, its protective wards fail, and Nyxas’s moon-spirit breaks in to assassinate Zayla. Blindsided by her death mark, she must flee aboveground to the eternal Night—a dark world of guillotine shops, blood bars, and monster prizefights, ruled by the very goddess who ordered her execution.

Zayla better learn why Nyxas wants to kill her before she succeeds. But as Zayla investigates the spirit’s attack, she also discovers the sun-magic’s only hope lies with her uncle—a famous drunk sorcerer lost decades ago to the Night. Determined to prove she’s more than the fire that brands her and save her home, she hunts him down for a cure while outfoxing the hunters on her heels.

To recast herself as the hero and protect her dysfunctional family from the Night, Zayla must outrace both her city’s fading light and Nyxas’s hungry beasts. But when she uncovers the secret behind her fire’s heritage, a birthright the moon goddess stole and will kill to keep, Zayla must decide what she’s willing to burn to reclaim it. And in a world with more teeth and claws than sunlight, she risks becoming the very monster her mother claims her to be.