One night, Celestia and Luna take a walk in the royal gardens only to find a small alicorn filly. She is solid white except for her cutie mark which consists of the color spectrum in the shape of a flower. Celestia recognizes who this filly is and her importance to the future of a certain kingdom.
Knowing that Canterlot isn't the best place to raise a filly, she entrusts Twilight and her friends to raise her in Ponyville, but keeps the truth about this filly a secret.