After ending up in an Equestria ruled by Nightmare Moon, you somehow became the tyrant's favorite subject, while she somehow fell in love with you. Maybe there is something more to her hidden beneath that cruel exterior.
A struggling young adult finds herself in Tartarus as the nefarious Cozy Glow. If she wants to go out and freely explore all of Equestria with her villainous buddies... she was first going to have to change this evil filly's future.