After escaping imprisonment by a group of especially sadistic vampires, young Callisto finds herself holed up in a cave, hiding from the ones trying to find and kill her. When her situation becomes even more impossible, she decides a cave is the only safe place for her anymore and makes it her home, Changing into her wolf to blend in and escape detection. Reports of a feral rouge living in the mountains and killing off any who come close are putting his pack on edge, and after the group he sends out returns tattered and terrified, Alpha Mitchell O'Brien has a feeling the only way to end it is to go himself.