After growing a fanatism over a Book saga, Twilight decides to take time to study some creatures in particular that called her attention, Werewolves, one day, she finds a spell to transform into one of them, Her curiosity ends up beating her and she uses her magic to give it a try, the new werewolf In Town will cause Panic all over, but it will save Ponyville from a coming menace that threads Ponville... Or maybe Equestria.