Brystal Evergreen is rapidly running out of time. Nearly a year ago, she made a desperate deal with Death to hunt down and destroy the Immortal in exchange for her own life, but she has not uncovered a single clue about where this mysterious enemy is hiding. As the deadline looms, an even darker and more malignant force rises from deep within the earth, threatening to destroy life as everyone knows it. To combat this terrifying new evil, the fairies and witches are forced to form a massive alliance, working alongside all the kingdoms and even joining forces with the Righteous Brotherhood and their terrifying Army of the Dead. Amidst the chaos, a secretive group of Sorcerers becomes convinced that Brystal's friend Xanthous Hayfield is somehow connected to the rising darkness. Brystal must untangle a web of ancient secrets and unexpected betrayals to save her friends and defeat the ultimate evil.