The Masters, dreadful and severe, rule the Red City and the lands far beyond it. By night, they politic and feast, drinking from townsfolk resigned to their fates. By day, the Masters must rely on their human servants, their Day Boys, to fulfill their every need and carry out their will. Mark is a Day Boy, practically raised by his Master, Dain. It’s grueling, often dangerous work, but Mark neither knows nor wants any other life. And, if a Day Boy proves himself worthy, the nightmarish, all-seeing Council of Teeth may choose to offer him a rare gift: the opportunity to forsake his humanity for monstrous power and near-immortality, like the Masters transformed before him. But in the crackling heat of the Red City, widespread discontent among his fellow humans threatens to fracture Mark's allegiances. As manhood draws near, so too does the end of Mark's tenure as a Day Boy, and he cannot stay suspended between the worlds of man and Master for much longer.