Stiles and his father have been the only two werewolves in Beacon Hills since they moved there seven years ago. In fact, Stiles had never even met another wolf that wasn't related to him. Which would be fine except that he was a Delta - a Third, a Breeder, whose only purpose in life was to find a nice big, strong Alpha or Beta to breed them like the bitch he apparently was. But, again, given the lack of werewolves, Stiles pretty much thought he'd never have to deal with any of that.
Then one night his father gets called out to a murder scene in the Preserve and Stiles can't help but go check it out.