Twilight's Kingdom - Part 1

Twilight's Kingdom - Part 1 is an upcoming episode of My Little Pony Friendship is Magic. It is produced as the twenty-fifth episode of the fourth season and the ninetieth episode overall. It is the first part of a two-part season finale.

Summary from press release
"Princess Twilight Sparkle continues to struggle with her identity as a princess and her role as the newest member of Equestrian royalty. When Princess Celestia has a premonition about a mysterious evil foe from the past and turns to an unlikely source for help, Twilight Sparkle feels extra pressure to prove her worth.

In hopes that it will provide some insight as to the kind of princess she is meant to be, Twilight Sparkle focuses her attention on opening the chest that was given to her by the Tree of Harmony. Secrets are revealed and mysteries are unraveled as all of Equestria joins forces to stop this new threat."

Summary from highlights
"When a villain escapes Tartarus, Princess Celestia chooses Discord to help track him down instead of Princess Twilight. Meanwhile, prompted to prove that she has an important role to play, Twilight turns her focus to opening the Tree of Harmony chest."

Summary from AT&T U-verse
"At the request of her magical mentor, a studious young pony shares adventures with her newfound friends as she learns new lessons about the value of friendship." [sic]

Summary from Zap2it
"Princess Celestia chooses Discord over Princess Twilight to help track down a villain."