Misty wakes up in the middle of the night, her body tired and her mind restless. She decides to walk around the Brighthouse for a bit to help calm her thoughts, only to notice Sunny’s bed completely empty, the earth pony nowhere in sight.

While exploring the decrepit remains of the Castle of Friendship, Sunny Starscout and her friends discover a strange book that might have belonged to Princess Twilight Sparkle herself. The book's contents resemble a series of letters that were apparently sent back and forth between Twilight and an unknown party.

At some point, Twilight stopped responding.

With advice from Zipp, Sunny decides to spend the day of a storm with Misty, and notices she's acting a bit secretive. Will she figure out why, or will it end in catastrophe?

Things are normal at the Crystal Brighthouse, but when Misty's notebook starts to burst with poems and writings dedicated to Sunny, a question sends her on a journey within to find the source.

Twilight Sparkle always found comfort in schedules and routines. Her daily life was so by the book, even when she'd need to see to official princess business, one could say it was almost written before she even woke up.

But when that routine is changed, interrupted, alternated and suspended, Twilight finds she will have a lot more on her plate than simply running Equestria.

Today marks the beginning of Twilight's really bad day.

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Sunny is careful to use her new abilities and influence only to help others. But even so, she notices everypony in town is increasingly tense and fearful around her. And then she finds out why...

After Discord's day with Twilight and Cadance, Fluttershy decides he ought to spend some time with the rest of the gang to get to know them a bit better.

What does it mean to be Celestia? What does it mean to be "at the top"?

Celestia knows.

And soon, Twilight will too.

Now on Equestria Daily!

Winner of the Second Twilestia Contest.

Now in Russian! Courtesy of Nogood.

Princess Celestia and Twilight Sparkle have a private meeting during the Royal Nightmare Night Party.

Princess Celestia, Regent of the Sun, has long guided the ponies of Equestria with a gentle and caring hoof. Never once did she allow herself to be swayed by thoughts of power, nor did she turn away from her subjects in their times of need. A ruler rightfully adored, she has helped an uncountable amount of ponies with their lives, finding their dreams, and fulfilling their destinies.

But comes the day she had long dreaded, but never feared.

Twilight Sparkle, her dutiful and precious student, has fulfilled her destiny and has become a new princess for Equestria. With her new role comes many responsibilities, but for a curious mare such as herself, so to come the questions. What does it mean to be an alicorn? What does it meant to be a princess? But more importantly than anything else, why is Princess Celestia an immortal, but Twilight Sparkle not?

It is a question the Princess of the Sun must now answer. Her last secret to be told to her greatest student.