Nora, an unruly demon, has defied his superiors one too many times. For the sake of his ""education,"" Nora is sent to live among mortals and enters a bond of servitude with cool-as-ice star student Kazuma Magari. Kazuma is about to learn the ways of the underworld...and Nora will learn more from the ""real world"" than he ever thought possible!

The Resistance, led by Fall, begins its siege on the Dark Liege's headquarters. Due to the immense power Fall gained in his encounter with the previous Cerberus, the Dark Liege faces a tough battle indeed...and as Nora and Kazuma rush to aid her, each must struggle with his own inevitable role in destiny.