Humans went underground to 'save themselves' for over twenty years after causing two Great Catastrophes that nearly ended the world. However, the preternatural entities have survived and thrived, except for suffering breeding issues that stunted the growth of Thunders, Packs, and Covens, among others. Without hope of finding their claimed mates, all could be lost.

Michaela is dying. Even as she knows she can't remain any longer in the cage her government placed her in, fleeing hasn't stopped the thing cyphering away her life with each mile she travels. All she wants is to find a quiet place to lay her head down for her final days. Instead, she finds herself ensnared in the blood-red gaze of the Prince of Darkness, who claims he has the power to restore her with one salacious bite.

His mate. Amaros never expected a human-made mark to elevate centuries-dormant vampire traits, but the lovely angel before him is a gift that can save him and his Coven. If he can't convince her to accept his transformative bite, he will lose her and the treasures she carries.