This story is a sequel to Transdementia
This was not how things were supposed to go for Sunset Shimmer. Thanks to Pinkie Pie and her crew of interlopers, instead of returning to Equestria at the head of a conquering army, she was now serving time in the Ft. Featherworth Prison, with little prospect of any sort of parole thanks to her reputation. However, as far down as she is, she is most definitely not out: just before their return to Equestria, Pinkie and her friends let slip just enough information while she was in earshot to allow her to start forming a plan.
And Sunset Shimmer is never more dangerous than when she has a plan.
This story is a continuation of the plotline begun in The Petriculture Cycle. The first story can be found here, and the TV Tropes page can be found here.
Artwork by Page Turner.