Oblivion Abduction by Grant Hamlin

Khelbar and his father, Landis, believe Adrennis to be a simple forest town. That simplicity is uprooted when a mysterious fire breaks out at the inn, and Landis' brother goes missing. Desperate and angry, Landis sets out to track down his brother, and Khelbar follows for a journey to the unknown he has hoped to undertake for years. With the help of a worn yet knowledgeable hermit, who claims to have answers to their many questions, Landis finds that his past is not exactly what he remembers, and a terrifying new war is brewing between Adrennis and its rival nation, Baladar.