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!

After finally meeting his long-lost brothers, Seth is faced with a difficult personal dilemma--choosing his brothers' side or letting Piodon live. Meanwhile, Doc finds out what it means to be a Droplet, and how tough life actually is down in the slums of Bôme.