Running low on pages to talk across the dimensional rift, Twilight reads what might be Sunset’s final message to her. However much to Twilight’s surprise, there’s also another message to a different pony.
Having accepted Twilight's offer of apprenticeship in the magic of friendship, Starlight Glimmer returns to the community she founded long ago, in her first attempt to make amends.
After storming into Princess Celestia's personal study unannounced, Twilight Sparkle soon learns her yearly battles against the forces of evil are a little more scripted than she'd thought.