Twilight Sparkle has been mentoring Sweetie Belle in magic for many months, and the filly has shown great promise. But, Twilight believes she isn't quite ready for the high level magic found in one of her spell books. But Sweetie Belle will show her! Sweetie Belle will show everypony!

After Twilight Sparkle tragically dies due to unknown circumstances, the Mane Six and the Princesses desperately try to function without their Element of Magic--and their friend. But while they're trying to recover, Queen Chrysalis sees the perfect opportunity to strike Equestria. Fighting grief, Changelings, and insanity, the ponies discover what truly makes a friend...and who they can really trust.