//------------------------------//
// Prologue ( the madness is lifted) 
// Story: Sage of Harmony (Season 2) 
// by Eon Seb 
//------------------------------//

Canterlot Royal Chambers.

The two Princesses sat filled with nervous energy. The plan they had prepared for weeks would soon be in action. “Sister, is your part of the plan ready? I just finished alerting all the guards. No pony is allowed entry until we sort this out.” Nightmare had mobilized the guard to code yellow, meaning the castle was on lockdown.
“I am as ready as I can be, Luna. Let's hope this works.” With those as the final words spoken, they sat and waited, for their guest would soon arrive.
With a stretch, Discord escaped his stone prison. “Well, that was unpleasant. If I never see another pigeon, it will be too soon.”  Discord would have started causing problems immediately, but he just could not resist seeing the princesses' faces when they realized he was free. So, with a snap of his claws, Discord teleported to their private sitting room “If I'm lucky, I should have time to set up a nice prank.”
Discord turned to start his mischief, and got a face full of cotton-candy cake, with a chocolate center if what his taste buds were telling him was right. Before he could move, he was tackled by a black alicorn.
“Now, Tia!” Celestia cast the spell she had prepared for this moment. Discord was suddenly coated in soap suds and, from the back of his mind once held back by his madness, memories began to surface.

A unicorn with a wild mane of white and black patches was walking down the street. Most ponies got out of his way. No one wanted to be near the chaos magician. As he passed through a darker part of town something caught his attention. With a quick spin, he went down a random road to find the source of the yelp he had heard. To his confusion, he found a pair of Gaiain fillies being surrounded by several pegasi who appeared to be from the guard. "Leave us alone, you bucket heads." the smaller of the two fillies was blue from head to tail but seemed to have a fire burning in her heart that belied her young age.
"Why should we do that? You're nothing important. Just a pair of annoying mud ponies." ah tribalism -  the bane of the modern world. Oh, how he hated it.
"Please, just leave us alone. We didn't do anything to you. Why chase us?" The larger filly was much calmer, but he could see a wicked glint in her eye. Like the other, she was one solid color (pink in her case).
He had enough of watching. "I agree. Why are you picking on a pair of foals? Ponies might get the wrong idea."
The leader spun around "It's none of your..." He paled rapidly (amusing as he was already white). "Shit! it's that crazy wizard! Run!"
They took to the sky and flew for their lives, fleeing from the laughter of the mad pony. "Well, that was fun. So, who do I have the honor of saving this day?"
After the two fillies looked at one another for a few minutes, the pink filly stepped forward. "I'm Tia, and this is Luna, Who are you?"
The odd pony smiled kindly (for him) 'My name, children, is Discord, the chaos mage. it's an honor to meet you."

On and on,  the memories continued; Discord watching two fillies as they explored his lab. Eventually, he would end up getting lost in the Everfree with his students, with all three finding a powerful tree and being filled with uncontrollable levels of magic. Discord woke up to find his students and friends had gained horns and wings while he had become something completely impossible. Finally, with tears brimming in his eyes, he remembered sitting with his friends; the new rulers; and his brother; the court mage; as they argued over the plans for building Canterlot.
Discord was shocked stiff until he felt the pony holding him loosen her embrace to a warm hug, and felt another join them. When he looked into the faces of the Princesses he found the last thing he expected, joy. Then, as one, his former pupils spoke. “Welcome home Professor, We have missed you more than you would believe.”
Discord blinked once, twice than with an honest, happy smile, he scooped them both into a tighter embrace “It's good to be home, my friends.”  
After they finished their hug Discord sat down to catch up with his old friends, After staving off their apologies for getting him stoned. "So what have I missed?"
Celestia got a Cheshire grin. Moon sensed the danger but was too slow to stop her. "Oh, not much for me. The same old boring court crap, but Lulu has had some fun recently. Tell our professor about your new flame, sister, dear."
Discord leaned forward (well, his head did; his body went sideways). "Oh do tell?"
After trying to endure the stare of her mentor, Nightmare broke down. "Okay, I'm going out with a mare by the name of Midnight, She's smart funny, collected, and she's a wonderful father to our foal."
Nightmare realized she had let her mouth run away again when Discord's eyes went wonky. "YOU HAVE A FOAL?!"
They managed to calm him down and begin what was going to be a long explanation of everything he missed due to his madness.

One long explanation later:

"So that's what you missed, Discord"  Discord just nodded sagely. It would have worked had he lost the strange outfit he was wearing. Celestia thought it was funny, but Nightmare wanted to burn it for some reason.
"So let me get this straight"-here he pointed to Luna-"' You used the exhausted magic of your marefriend to make a new star and place it next to the moon?"
Both Princesses face-faulted. Of all possible reactions, they had not counted on that being one of them.
"That's what you got from the story?" Nightmare felt a vain in her head pulsing-"We just told you everything that happened in the last thousand years -  including the death of your brother, the fall of the griffon empire and 3 near wars with the yaks, and all you get is me making a new star?!"
Discord shrugged, his outfit disappearing in the process. 'Well, it was the only thing I didn't already know about."
Discord realized he may have pushed them too far when he saw their synchronized eye twitch. Then, 3 seconds later, they tackled him to the ground hell-bent on finding his (now mobile) weak spot. Just like old times. It was good to be home.