Kingston St. Louis and Martin Von Brandt are vampire hunters of the highest caliber. That is until Kingston is made a vampire and they discover too late that the city is being taken over by vampires in a bloody coup.

Branded as outlaws, they're forced into hiding with an unexpected ally. For their plan to stop the coup to work, Kingston will have to overcome his prejudices and train the very vampires he used to hunt, and Martin must learn magic.

All the while, they struggle with their feelings for each other. Love can be a weakness, and they can't afford weakness when hiding from a powerful enemy.