The world is overrun with monsters called Nemeses-and a young boy infected by one will stop at nothing to defeat them all!

Evil creatures called Nemeses fall from the skies and the only ones who can fight them are Wizards-infected ones who survived a Nemesis's corruption. Seth, one of these survivors, vows not only to fight the Nemeses, but to find their mythical nest, Radiant, and destroy it!

Seth winds up participating in the famous Broom Broom Cup survival competition and, alongside Taj, strives to come in first. Meanwhile, on Artemis, the consequences of his actions at Rumble Town unexpectedly resurface! Forced to hunt down a former ally, Seth and his companions make their way to Bôme, the capital of the Eastern Townships, seat of the Inquisition as well as home base for one of the largest factions of Domitors-the vaunted tamers of Nemeses.