The Crystal Empire (Sonic: Adventures in Equestria)

The Crystal Empire is the 1st episode of Season 3 of Sonic: Adventures in Equestria, and a reimagining of the Season 3 MLP: FiM Two Parter of the same name.

Summany
When the Crystal Empire returns after being cursed by King Sombra, Celestia enlists Team Sonic and the Mane Six to help Shining Armor and Princess Cadence protect it and find the Crystal Heart, with the Mane Six given a important test that might hint towards their destiny, but when the newly resurrected Metarex get involved, things may take a dark turn.

Differences

 * The Mane Six are given the text together instead of just Twilight.
 * Team Sonic set up the Crystal Faire while the Mane Six find the Crystal Heart.

Transcript
To be added...

Recap
"Last time on Sonic Adventures in Equestria, a curse that caused the Crystal Empire to vanish for a thousand years finally ended. Princess Celestia orders the Mane Six and Team Sonic to help Princess Cadance and Shining Armor defend the newly awakened Empire against King Sombra, the evil unicorn who had cursed the empire. Though for the Mane Six, the stress is up to the max and they've been given a important test that they're worried they might fail, after reuniting with Shining Armor outside the Empire, a suprise attack from Team Sonic's old enemies the Metarex and King Sombra has them all running to the Empire, which by now was being protected by Cadance using a shield spell. While Sonic and his friends help set up the Crystal Faire to keep the Crystal Ponies' spirits up, the Mane Six go off by themselves to find the Crystal Heart, which Sombra had hidden when he took over, will our heroes succeed in their efforts, or will darkness take ahold, find out next on Sonic Adventures in Equestria."

Trivia

 * Dark Oak and the rest of the Metarex are revealed to have been ressurected by Eggman sometime before the events of A Canterlot Wedding.