Humanity has always prevailed against the supernatural 1000 years has passed since their discovery Hunters where trained and created to hunt any and all supernaturals and Damian was the best out of all of them. werewolves, zombies, vampires, giants, dragons. You name the anomoly Damian  has killed them but despite being the best he couldnt protect the one he loved the most. They where taken from him and he will go through any lengths to get them back.