Therion, the Son of Destruction, is dead. Without the offspring of Diablos, the Nephilim hordes have gone dormant and Angelica and the Daughters of the Watchers have had three years of blissful living. Their careers have advanced. Their relationships have blossomed. Everything is coming up aces for the women. Until the status quo is unexpectedly upended by a new threat. An entity more powerful and deadly than any they've faced before is hunting down the Daughters of the Watchers one by one. The Daughters scramble to identify this mysterious terror and why it's hunting them. They discover that their given abilities and gifts are useless against this new adversary. Their only choice is to depend on allies old and new who have tapped into much a greater power-the power of the Primals. Have they rested on their laurels for too long? Can they trust these enigmatic new powers? Meanwhile, old enemies are emerging from the shadows to take advantage of the Daughters' preoccupation with staying alive. The King of the Abyss had remained quiet for the last three years. However, Diablos' diabolic plans have reached fruition, and the Star of Nimrod are preparing to expand their hybrid-hating message. Will Angelica and her allies be able to contend with adversaries new and old while maintaining their newly found peaceful lives? Or will it all come crashing down as they fight a battle that they are ill-prepared for?