Marked by the Bronze Crescent said to corrupt one's soul, eighteen-year-old Ezro Valorian is among the few able to fight the vicious netherbeasts ravaging Paran'dan. But when the family he's suffered to protect betrays him for his treasonous beliefs, Ezro loses everything he's risked his soul for.

Desperate for purpose, he pursues a lost traveler, hoping to rescue her from the dangerous beasts in the desert. However, when he finds her, he learns she's more than a traveler. She's Vaeryn Seraphine, a descendant of their kingdom's slain protector, and she's seeking her family's divine power so she can restore the order of the Luminors and save the kingdom. But to reach this hidden power, Vaeryn must traverse a perilous canyon, and without the Bronze Crescent, she is defenseless against the beasts therein.

Ezro offers his aid, and the two begin the dangerous quest. But is one man enough to face a canyon of monsters?