In the first Installment of Nightmare Knights, the original line-up of an Equestrian Progressive, Gothic, Black Metal band are introduced, and faced with loyalist prejudice as an arrogant but well-meaning pegasus pugilist shows up to challenge the corrupt weather manager. Rebel Rouser and the Nightmare Knights need to work together to face her down, but as it turns out, black metal musicians aren't the most eager soldiers, and even if they were... Will the residents of Ponyville really choose a visiting Nightmare Moon dedicated band, over an effective, if unscrupulous pegasus loyalist?