The Elements of Harmony didn't just purify Sunset Shimmer, they killed her and send her to the worse place any being would want to be, the world of Dark Souls. Will Sunset crumble or she will be the Chosen Undead?
Celestia and Sunset decided that maybe it was time for a break before they start fighting, so with that inmind Sunset accepts the invitation of a magical school at the other side of the mirror. Pray for the sanity of those in the school.
She has been on Earth for a long time, she even died to save humans once. Rose Quartz gave her a second chance to live and now she is in the biggest adventure of her life; becoming a Crystal Gem helping raise Steven and mostly having fun.