Cole and Bryce Grayson, run a paranormal exterminator business with their lover and partner Sebastian. With Bryce and Bastian each suffering from cases of the furries every full moon, Cole was happy to be the odd man out in his normalcy. However, after hunting down a pack of vampires, Cole Grayson discovers that he may not just be a typical hunter either. While he was aware that he had been adopted and that his birth mother had been a witch, he hadn't realized what that would mean for him until his powers went off like a bomb to help clear a nest a vampires…with no warning or training. All the beasties within a 50 mile radius felt the pull of Cole's explosion, and have come to investigate. Since it is Halloween, it takes a while for the public to notice something is amiss in their city, but soon Detroit is overrun with ghosts, zombies and witches, making for a night everyone hopes to survive.