After King Sombra's defeat and the return of the Crystal Empire, Princess Celestia came to the mane six with an offer: to become a manifestation of her will throughout the world, an elite team designed to solve Equestria's most dangerous problems. Warriors and diplomats, Twilight and her friends must leave their homes and their loved ones to ensure the safety of all. This pursuit will push them to new heights, and new depths.

The world is a dangerous place.

After conquering yet another ancient evil, Twilight returns to her library. There, she encounters the ghost of King Sombra, who delivers a terrible warning about the dangers of helping emopones.

A touching, heartfelt tragedy, except it was written by Fiddlebottoms, so it is not.