From the introduction:
For as long as mankind has existed, there have been beings watching over them. On occasion, they will uplift someone, creating a conqueror of nations, a king over all, or merely a genius for the ages. These individuals who are blessed are known as the Angels, for they bear the gods blessing, and are responsible for sharing it with you. That blessing mostly involving their dick. The Angels are enhanced beyond other mortals, both in body and mind. With a body that is both male and female, any they sleep with becomes their slave. As you might imagine, they thoroughly enjoy their new position of power.