Incubus Lemos knows it's his duty to go to the human realm and collect energy for his master, Rezoth. He knows it, but he doesn't love it. Lemos would rather stay with Rezoth and serve his overlord in other ways.
Rezoth knows how hard it is to please an elderdemon like himself. When Lemos says he wants that to be his life's work, Rezoth is willing to give him a try. He's pleased with the result, but there are other forces at work trying to tear them apart. Will Lemos get what he wants for eternity, or are he and Rezoth destined to fail?