After an epic struggle that unseated the Azura Lord of Death and placed Serjana Caelum's best friend, Kyle, on his throne, the Mortal Realm is peaceful and the balance between good and evil—which Sera is sworn to protect—has been restored.
But signs of a new threat to the world of men quickly begin to appear: A scourge of demons descends on the Mortal Realm, and Sera is beside herself trying to locate their source. She sends word to the gods for help, and their answer comes in the form of Kira, the living incarnation of Kali, goddess of destruction.
Stunning and dangerous, Kira plans to protect the heavens at all cost, even if it means destroying the entire Mortal Realm. Soon Sera and Kyle find themselves fighting not just the demon plague, but Kira and her twin. But when an even more sinister threat arises—putting not just the human world but all planes of existence in jeopardy—they must all learn to work together or lose everything they sacrificed so much to save.