Philippe Clemis is The Alliance of Silver and Steam's best hunter. He's killed hundreds of the vile demons and kills without remorse. When Odette shows up back in London after her family was slaughtered he's assigned to get her reacquainted with guild ways - he'd rather be cleaning up the toilets. The obstinate female drives him crazy and makes him mad with desire because she challenges him in a way no one ever has.
When a Kappa Demon attack on Philippe claims Odette instead the pair will have to work together to stop her transformation into the vampiric little demon. A journey across Europe and into hell itself to find a cure will force the pair to determine if what they feel is love or hate if they are going to make it back alive.