Rarity summoned a comb and ran it through her amethyst, coiffed mane, moaning as she ended with a split end.

"How much longer?" she groaned. Applejack rolled her eyes and Rainbow dove in unsteadily for another attack of the cell door.

"Hey, does anyone else hear that?" Pinkie cried, jumping on the exhausted Rainbow so she could see. Running across the hall was Nightmare Moon; eyes narrowed and face in a scowl. "Ah! Take cover!"

Pinkie sped to the back of the cells and the others joined her, shutting their eyes and curling up and clutching each other nervously.

The cell door sprang from its hinges and rocketed towards them, smashing into the curved wall above their heads before tipping and falling to their hooves. Rainbow, who was in front of the group, cringed away as Nightmare Moon stood in the exit, eyes wild.

"Don't hurt my friends!" a familiar voice warned. Twilight! "If you do, there'll be consequences!"

"Puh!" Nightmare Moon spat. "You wouldn't touch me! Not without your precious Sombre to protect you!"

"Try me," Twilight smiled, grazing the ground with her hoof before charging, her horn glowing. Rarity immediately noticed her best friend galloping towards them, not the queen.

"Twilight! Watch out!" Rarity screamed.

It was too late. Nightmare Moon was a meter from Twilight and there was no way to escape. They all watched as Twilight turned and fled towards the door, but a blue glow surrounded the door and shut it with a slam, sending a shiver down the delicate mare's spine.

"Whoa!" Twilight yelped as the blue glow enveloped her and lifted her off the ground. Then, her eyes narrowed and she smiled. "Prepare for the big shots!"

A calm purple light flashed around the imprisoned mares and they looked around to see the elements around their necks. Then they leapt from their sanctuary and Twilight teleported to the space in front of them, her wings gone but her friendship back. The crown that represented the Element of Magic sat upon her head.

They lifted off the ground in a purple bubble before their elements began to make firing noises and their outsides flew out. Then, rainbows joined their necklaces and then spiralled around Twilight. Then a beautiful rainbow fired from the star and enveloped Nightmare Moon, making her yell out, before Luna stood in her place, panting.

"What is wrong with you?" Rainbow demanded, her energy returning. "How can you become Nightmare Moon again?"

"I… I… What?" Luna cried in alarm. "I turned into Nightmare Moon?" Suddenly, she winced and lifted a hoof to her forehead. "She took over again."

"She did…" Applejack began.

"What?" every pony cried at the same time.

"Well, ever since you saved me from her she's been trying to make me join her and…" Luna started to explain.

"Wait, wait, wait!" Rainbow held up her hooves. "Nightmare Moon has been trying to make you join her? What in the hay does that mean?"

"Well…" Luna bit her lip. "Every time I look at my reflection Nightmare Moon is there and she talks to me. Then, recently, she has been fighting with me inside my head and I guess she took over… She is stronger than me, after all…"

"Oh no!" Twilight cried in alarm, rushing forward. "We must tell Celestia!"

"No!" Luna protested. "I don't want her to know. She'll make me take a break and she'll think I'm ill and…"

"Okay, sugar cube," Applejack soothed her, arriving at her side. "We won't tell her, right Twilight?"

"I guess…" Twilight frowned. "But if it happens again Celestia'll need to know!"

"Yes, agreed," Luna nodded, putting out her hoof. Twilight shook it and then cautiously walked out of the room with the others.

They all stood in the same position, staring Discord down, but before they could fire he had fled and Chrysalis stood there with Gilda. Gilda cawed and then shot forward but when Rainbow raced forward she dived out of the window. Chrysalis soon followed.

"Back to Canterlot," Twilight said softly.

"Yes," Luna nodded and her horn began to glow as every pony held hooves. A blinding flash ensued and they returned to Canterlot.

"Wha…?" Spike groaned, waking finally. Every pony stared at him in shock as he jumped off Applejack's back and stretched.

"Twilight! Luna!" a flowing voice called and Celestia appeared, racing forward. She embraced the two and smiled. "You have returned at last!"