Years ago, a young mare named Sunset Shimmer has tragically lost her life on Earth during a scouting mission in Africa. However, her lost soul is visited by the entity in the heart of Tartarus. The entity has given some time to talk, including giving her the history of Equestria's darkest years has come. When she's given the news about another dangerous force to appear should the war between Earth and Equestria continues, Sunset is offered a second chance to live again and gather any allies she can in order to stop her own former mentor and loyal subjects, even if it pains her heart.

This is part of the NegotiationsVerse AU; What if Sunset Shimmer is given a second chance to live and going up against her own former home land and mentor, including her subjects?

If any who wants to read to original canon timeline, it's right here; https://www.fimfiction.net/story/301668/negotiations

For those confused or first time of reading the Negotiations-Verse and need more information, click down below.
https://tvtropes.org/pmwiki/pmwiki.php/Fanfic/TheNegotiationsVerse