During a very bad week Quizzical Greystone comes to believe her whole life has been a failure. Three strange mares travel a long way, just to show her that she's wrong.
It's been five years since the CMC began, and many things have changed. Sweetie Belle and Apple Bloom are attending an Academy, and everything is more or less normal. Little do they know the dark forces that lurk close.
Sweetie Belle wonders what is running through Opal's mind when she attacks Rarity one morning. During Twilight Time she runs across a spell that allows animals to talk. She memorizes it and casts it on some of the pets.
When Rarity becomes the victim of an invisibility spell, she voluntarily and involuntarily goes through different ways to show herself before Twilight Sparkle can find a counter spell.
When a pirate named Captain Jack Silver steals the Elements of Harmony, it's up to Twilight and the rest of the Mane Six to get them back. Soon enough they all find themselves on a swashbuckling adventure to find the SEVENTH Element of Harmony.