Trixie visits Twilight's library. When Twilight goes to sleep, she has a nightmare, and wakes up in New York as a human. This isn't the New York or the Twilight you'd expect. There are some tiny little problems, though. She's taken residence in another girl's body and life, and that must mean another girl is going around as Twilight! Also, the human is not exactly what you would find in the books back in Equestria.