Twilight was on the road to recovery from her mental illness. She had started a new treatment, bonded with the staff, and had many friends in her ward. Now she wakes up in the center of the delusions she has been trying so hard to escape: Ponyville.
Have you ever wondered what might happen if Pinkie did alchemy? Suppose Twilight was Zeus' daughter? What about if Dash was a cyborg with dragonborn heritage and an Omnitrix? How might they change the world gaining new powers every few days?
After taking on some extra royal duties, Twilight makes it so that the only way her friends can see her is by getting a job interview with her. Rarity decides to do so in the most unprofessional way possible.
I used to be a human girl named Rachel. Now some self-appointed "Spirit of Chaos" (who surely has an ulterior motive) decided to "rescue" me from my fate and give me a second chance. Yeah, being a pastel pony in an insane world is SO much better.
A well-led life runs into an end. If that was it, it would have been fine, but the forces of the universe were not content, finding another purpose, or perhaps reward, for this being in another world entirely. May she shine gently.