Twilight Sparkle, a studious unicorn and faithful protégé of Imperatrix Celestia, discovers a disturbing prophecy during her studies. Her curiosity leads her down a path of uncovering a deep and hidden mystery from Equestria's past.

With her sense of duty, Twilight must also juggle the responsibility of organizing the Summer Sun Celebration and her own social awkwardness as she learns about the ponies in Ponyville. Will she be able to balance it all and uncover the truth before it's too late?