Sable Vale has never fit in. The daughter of a disgraced warrior, she keeps to the edges of her pack and hides the rare blood that everyone wants.
Then the Moon Goddess binds her to Alcide, the Red Maw, the most feared being in every kingdom. He needs her blood to keep his beast from consuming him, and every feeding pulls her closer to a man she should hate.
But Alcide isn't the only Alpha who wants her. Balin was sent to win her trust and take her life. Rex was forced to make her his Luna, though his heart belongs to someone else.
As three kingdoms collide, Sable must uncover the truth about her father and the ancient power in her blood. Will she submit to the system that controls her, or burn it down?