In the city of Yuan, the blind Princess Isra is raised to be a human sacrifice. Her death will ensure her city’s vitality. In the desert, a mutant beast named Gem fights to save his people, known as the Monstrous, from starvation. Neither dreams that, together, they can return balance to their worlds. When Gem is captured for trying to steal Yuan’s enchanted roses, he becomes a prisoner of the city. Isra enlists his help, and soon begins to care for him—and to question everything she has been brought up to believe. . . .