"Do you have a twin sister who lives in the city, has a pet dog named Spike that looks just like that one?" Asked Pinkie Pie to Princess Twilight Sparkle of Equestria when she was signing up for Princess of the Fall Formal.

What Twilight didn't think to ask is what condition that Twilight was in and why she wasn't at school.

Set after My Little Pony: Friendship is Magic - Equestria Girls the movie, the story follows that other human Twilight Sparkle as she returns to school, now unexpectedly a hero.