One month after the events of My Little Pony: Equestria Girls, Sunset Shimmer finds her life in the human world crumbling around her. As a dangerous new enemy begins to show itself, in the form of a powerful terrorist organization known as the Chrysalis Syndicate, Sunset finds herself with no choice but to return to Equestria.

Upon prematurely crossing through the portal, Sunset is arrested for her past crimes and brought to the Princesses. She finds a new mentor in Princess Luna, is reunited with a long-lost family member, and is sent on a mission that would redeem herself in the eyes of the Princesses and the rest of Equestria.

But everything is not as it would seem. Even now when Sunset has come back to Equestria, she finds herself facing great danger, including a sinister villain involved in her past. Will Sunset and her new friends be able to confront this renewed, improved menace?

Table of Contents (For the reader's convenience):
Return to Equestria arc: Chapters 1-2
Mission to Fillydelphia arc: Chapters 3-22
The Weekend Off arc: Chapters 23-37
Vanhoover arc: Chapters 38-65
The Big Night arc: Chapters 66-80
Epilogue chapter: 81

Update: Now has a TV Tropes article, which can be found here. If you happen to be a Troper, please add any trope examples you find in this story to the article.

Current cover art by: mrs1989