Ninny Spangcole leads the popular girl group Cecile Die Twice, yet her ambitions extend well beyond a successful music career. In the concealed underground realm of Reverse London, Ninny and her partner Noel "Niiha" Niihashi pursue loftier objectives as "Witches," members of the organization Wing Bind, which is dedicated to handling dragons. These powerful creatures once caused over half of all casualties in the city proper before Reverse London split away from Front London. Since dragons are invisible to most Front Londoners, their existence has become mere myth, leaving Reverse Londoners to take up the front lines. Consequently, Wing Bind was created, prohibiting non-licensed individuals from coming into any contact with dragons. Ninny and Noel have their work cut out for them when they are assigned as caretakers of Balgo Ywain Parks and his dog Osushi-chan. With trouble persistently trailing close behind him, the two girls are left to deal with the aftermath. Even more problems arise when Macy Baljure, Ninny's former bandmate, appears in Reverse London with a dragon by her side.