Danielle is a Guardian, one of the rare immortals whose gifts make them the stuff of legend; but she has rejected that world. Five years after the events of Guardians, when she learned the truth of her heritage, she is attempting to forge a new life as an anonymous university student. While working on her relationship with her grandfather Longinus, the leader of the Guardians, she is drawn back into the ancient war against the Demons. As armies of demons invade Earth, Guardians and Demons plot and scheme to bring an end to the conflict. Factions form, and two worlds are transformed as the plans of the ancient Archangel Michael finally come to fruition. All that stands in his way is Danielle ...