Princess Twilight Sparkle has been asked to take over a very important correspondence job for Princess Celestia. But it turns out she knows her correspondent already - The Great And Powerful Trixie!
Twilight Sparkle continues to write letters to Princess Celestia & Princess Luna after becoming a princess herself, but this time as a friend rather than a student.
The Solar Corporation would like to remind all employees that the incident involving Fiddlesticks and Lightning Dust was an isolated one, and would like to direct all further inquiries to their Incident Help Desk for an appropriately timely response.
After a portal malfunction threatens to seal the human world and Equestria apart, the Rainbooms decide to write letters of friendship and appreciation to Princess Twilight.
Time after time, Twilight Sparkle tried to find out the reasons for Cozy Glow's actions and got rejected. But maybe a special team of ponies and creatures could succeed where she and her friends have failed. She was not going to give up so easily.