The Return of Harmony (Sonic: Adventures in Equestria)

The Return of Harmony is the 1st episode of Season 2 of Sonic: Adventures in Equestria, and a reimagining of the Season 2 MLP: FiM Two Parter of the same name.

Summany
After the lord of chaos, Discord is freed after a thousand years trapped as a statue, Princess Celestia tasks Team Sonic and the Mane Six to use the Elements of Harmony to stop him, only to discover that Discord has hidden them and the Chaos Emeralds elsewhere, and when the Mane Six end up getting corrupted by him, Team Sonic must find a way to re-imprison and save the world from eternal chaos, meanwhile, Eggman tries to take advantage of the situation, only to become indecisive on what to do.

Differences

 * Discord also corrupts Twilight when corrupting the Mane Six, leaving it up to Sonic, Tails, Knuckles, Amy, Shadow and Cream to find a way to restore them as without their bearers, the Elements of Harmony won't work.
 * After figuring out how to restore the Mane Six to normal, Team Sonic face them in a battle, where after tying them up, Sonic tricks Twilight into using the Memory Spell on herself and her friends, restoring them to normal.

Transcript
To be added...

Recap
"Last time on Sonic Adventures in Equestria, a ancient evil named Discord broke out of his stone prison and began causing chaos all over the place, Princess Celestia opted for the Mane Six to use the Elements of Harmony to re-imprison him, only to find to Discord had hidden them somewhere, and to add insult to injury, Team Sonic discovered that Discord had hidden the Chaos Emeralds as well, Team Sonic and the Mane Six went to the palace maze to find them, but Discord suggests they play a game and removes the group's powers and abilities, meanwhile, Eggman tries to take advanage of the situation, but becomes indecisive on what to do, as for Discord, he slowly corrupted the Mane Six into the opposide of their elements one by one until manipulating them into becoming his queens of chaos, with Equestria looking like it'll see a eternaity of chaos, can Team Sonic win when the odds are so stacked against them, find out next on Sonic Adventures in Equestria."

Trivia

 * Eggman losing the capablility of making a decision on his own is similar to what happened in the Sonic Boom episode, "Aim Low".