As the royal family grows, so does Princess Luna's happiness. She is exceptionally close to her granddaughter, Princess Edelweiss, partly because the young alicorn bears a striking resemblance to Luna’s very old friend.

Uniquely sensitive, shy, kind, and gentle, Edelweiss, nicknamed Della by her family, is rarely seen in public, preferring the company of woodland creatures over other ponies. Fluttershy becomes Della’s mentor, teaching the gifted alicorn how to best use her talents and recognizing a kindred spirit in the process.