Luna wakes up to find Celestia and herself stranded in a replica Canterlot on the moon. Her sister's mind has regressed to that of a child and the only pony who knows what's going on is a ghostly copy of herself.
Why are they there? Where is everypony? What is wrong with Celestia? Where is the sun?
Where is the their world? And can Luna even trust her own memories?
Luna must uncover these answers, but will she be able to handle the cold truth?
Ignorance is bliss after all.

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An idea that came to me a while ago. I'll be working on this occasionally when I feel like taking a break from
Roses for the Grave.
Categories aren't definite at this time.