In a world divided by Heaven and Hell, Knox, Lucifer’s feared demon general, has spent centuries waging war against angels without question. Cold, powerful, and utterly loyal to darkness, he never expected his life to change the moment an angel crashes into his world. As an ancient threat begins rising beyond both realms, the two enemies are forced into an uneasy alliance. But somewhere between war, destiny, and forbidden feelings, Knox begins falling for the one person he was created to hate.