Takes place one year after the events of the first Equestria Girls movie and written in Sunset Shimmer's point of view.
Sunset's friends finally ask her the question they still don't know the answer to: "What led to you coming here anyway?". It's a personal question for Sunset, but it's about time she tells them.
No, I'm not ignoring the comic. I'm just telling my headcanon on what happened before it.