Trixie concocts a plan to revive her tarnished image; take up the mantle of Mare-Do-Well and claim the credit for herself. When Shining Armor begins to pursue the aspiring vigilante, Trixie struggles to decide if the life of a hero is really for her.
Twilight is turned into an alicorn against her will, paying a terrible price. Now she becomes Equestria's worst enemy, and sets on a journey to uncover her world's greatest secret: The truth behind the nature of the alicorns.
It had been a year since Twilight had heard of anything from Trixie since the Alicorn Amulet incident. Unexpectedly, she receives a letter saying that her so called "rival" has tragically died and is requested to be at her funeral.
Twilight Sparkle tracks down her former rival, intending to right the wrongs of the past. However, sometimes what's broken can't be fixed, making her realise there's still a lot she has to learn about friendship.
Trixie returns to Twilight with yet another problem for her to fix, only this little mishap turns out to be much more serious than it first appears to be.