Jaylen Corrifus is a fifteen-year-old paladin in the country of Vilyron where his uncle is the king. All paladins are trained in combat, light magic, and are bonded to a Holy Angel to guide them and protect them. Alongside his angel, Zeriel, Jaylen is tasked with hunting down demonic creatures that have made their way into the human world. But there is a bigger problem growing. The sun has vanished, leaving everything clouded in darkness and snow. In order to bring it back and save humanity, Jaylen faces being sacrificed along with his fellow paladins in a corrupt ceremony known as The Cleansing. The political tensions grow between Vilyron and its rival country of bloodthirsty werewolves, Wolfekin. With the help of a young thief, an Elder Dragon, a burly warlock, a mysterious demon-summoning druid from a long-forgotten land, a kind incubus, and a host of misfit angels, Jaylen must face his fate and die to bring back the sun . . . or figure out why his beloved sun goddess has abandoned them all.