When Sunset Shimmer originally went through the mirror portal to Earth, she was not the only one who went through the portal. Now, the Sunset Shimmer who was originally human must find out what it's like to be a pony, and how to live without anypony knowing who she really is.

Will this Sunset be found by Princess Celestia and have to explain herself? Or will she be able to lay low until she figures out how to be a pony? Will she be alone? Or will she make friends in this strange new world?

Will she be able to use magic, and become ambitious like the other Sunset? Or will she discover something better, something greater, and be a better pony?