Twilight groaned as she landed on the cold floor of her castle. Hades had decided that it would be fine to teleport them despite the injured ponies. She let out a groan as she got to her feet stumbling a bit trying to find out where she was.

“BROTHER! THERE YOU ARE!” Papyrus’ voice rang out causing everyone in the room to look at the taller skeleton. “WHY ARE YOU HERE? I THOUGHT YOU WERE HELPING THE BABY!”

“She’s alright!” Spike commented looking down at the foal in his arms. “We need to get Celestia to the medical wing.”

Twilight moved to her mentor’s side and helped her to her hooves. They slowly made their way to the medical wing, Celestia moving along slowly. She was staring at the ground trying to stay focused but a memory from long ago surfaced.

“Sister, where are you going?” a younger Luna asked running to her sister’s side as her older sister packed. “We have to stay in the castle, Harmonia….”

“I’m not going far, I’m just going to the wall.” Celestia answered with a grin on her face. “I’m camping out on the wall. I’m not leaving.”

Luna just raised an eyebrow before watching her sister leave through the window. She glanced towards the wall knowing that her sister was curious about what the outside world was like. They were going to rule over the pony. Protectors, not involved, yet the younger princess wished that she had her sister’s courage to leave like she does.

Celestia touched down on the wall and gazed out at the forest surrounding them. Her wings twitched as she glanced around at the forest below. Her magenta eyes spotted movement below and she scooted towards the edge but trying not to move over it. It had a flame like appearance. ‘You can’t go past the wall Celestia.’ she reminded herself before looking back towards the cave. She wondered if Harmonia would even know if she would check it out. Her hoof moved over the edge as she felt the tingle of disappointment in the back of her head. The young alicorn let out a groan before pulling it back.

“What’cha doin’ up there?” a voice called out causing her to look down again, gold eyes were peering up at her. She scooted closer letting her head hang down, that didn’t cause the feeling of dismay.

“Remaining behind the walls.” she replied trying to find the source of the voice, it was hidden in the bushes. The voice began to laugh at her and the princess frowned before flying down pushing past the guilt that she was betraying her dear teacher.

“Oh? You grew a pair.” the voice sneered and Celestia had to cover her nose as she smelt sulfur and something she couldn’t quite place. “Get used to it girly, I’m here to stay.”

“What are you?” she asked using her magic to move the bushes, sitting there was a strange creature with long horns curling back and green tinted skin.

“I’m an imp, you may call me Degmur.” the creature told her tilting his head back as he examined the environment. “Nice place you got here. What do you say about some… licensed misbehavior?”

“What do you mean by that?” the white princess was confused for a moment and the grin on the imp’s face made her worried.

“Well you’ve got to be bored living in that giant castle all by yourself.” Degmur pointed out placing a claw against her chest. Celestia didn’t step back as she looked down at the imp asking. “Who said I’m alone?”

“Who are you going to tell about me?” dared the smaller creature just as wings caught her ear and the alicorn used her magic to disguise the imp as a wounded animal. She looked to see an alicorn with a strange headdress flying down.

“Celestia, how many times do I have to tell you that you must not go beyond the castle walls?” the alicorn asked taking a step forward, Celestia gestured a hoof towards the ‘wounded animal’ saying. “I saw an injured animal, can we bring it inside the walls Lady Harmonia? Just until it is healed.”

The alicorn stared down at the disguised imp for a moment before saying. “Until it is healed, then it must go.”

“Of course.” the younger alicorn bowed before using her magic to place the imp upon her back. She flew after the alicorn not thinking about the trouble that she would cause with her new friend by her side.

Tears fell from the unconscious princess’s eyes as she remembered the first meeting of the creature that tried to destroy Equestria from within. Twilight blinked in surprise wondering what her mentor was dreaming about but upon arriving to the medical wing and seeing Luna laying there the first question out of her mouth was. “What happened?”

“It seems that your princess of the night isn’t quite used to raising the sun.” Midnight Sun spoke walking in looking very tired. “You should probably inform Doctor Halsey that your back. From what I’ve observed… she thinking of all worst case scenarios that could possibly come out of losing Celestia and preparing her troops accordingly.”

“I’ll go talk to her… anything else?” Twilight groaned looking at the dark grey unicorn who just looked to the side thinking for a moment before saying. “Yeah, I’m looking into some of the old spells that Aqua Star kept in her old notebook. If you want to stop by I’ll be in Aurora’s magically sealed chamber in case one of them is an attack spell that explodes on me… again.”

“How many times… never mind, thank you Midnight.” the newest princess said a small smile gracing her face before she went off to find the human doctor. Spike walked up next to the black maned stallion asking. “Are you really going to experiment with ancient magic?”

“Not experiment, yet if I can figure them out we can use them to protect Equestria.” Midnight explained looking down at the growing dragon. “How is Moonlight? You should get her examined by the medic as you did bring her down to the underworld. You don’t know what can happen to a child that young.”

Spike looked down at his daughter and moved her mane a bit with his claw. She woke up with a yawn before looking at him with a goofy smile. He sighed before looking around for the nurse who was checking on Celestia at the moment. A hoof was placed on his shoulder as Rarity spoke up. “I can wait with you Spike, after all we’re both in this together.”

“Thanks Rarity.” the purple dragon replied holding the foal close to him. “I can’t believe we nearly lost her.”

“I guess we will not find out what happened or what was needed to save her.” the fashionista mused petting Moonlight who just curled into the touch. Both of them looked at each other and gave a quiet smile.

Luna awoke from her slumber with a heavy feeling over her. She knew where she was and her only worry was how the humans were reacting. That was when she looked to the side and saw her sister lying on one of the beds.

“Deg.” she heard her say and her heart dropped. Luna knew how close Celestia was to her old friend. Many days did she wonder if Celestia was the one to fall, would the imp have been the cause. ‘Did I do the right thing? Sealing the first friend she had away?’

“You did what was right.” a deep voice spoke and Luna’s eyes narrowed as she looked behind her.

“Leave.” she growled not even turning to face the voice. “None of you are welcome here.”

“Don’t you see, Felan, no door is truly sealed.” the voice answered and Luna swung around ready to attack the owner of the voice only to see the Tantabus. She growled at it recoiled in fear as she said. “Do not do that again. Use any memory except for those, do you understand me?”

“Oh? You do not wish to remember a betrayal worse than what you did to your sister?” Luna spun around coming face to face with the one secret she wished to hide. “Taking part in the world that she was denied.”

“Go away.” she spoke as she summoned her magic only to be launched back by the powerful wings upon the creatures back. “You are not real, this is a dream.”

“You tell yourself that traitor, in order to justify what you did. You are no better than Malfurion, who had me locked away!” a large hand launched out and grabbed Luna by the neck. The Princess of the Night reached up with a hoof only to find familiar fingers again.

“Release me!” she snapped grabbing onto the wrist and dug her nails in. Her mind was beginning to get hazy. Her eyes drooped before looking at her sister nearby, she reached out a hand and barely managed to touch her shoulder before darkness took her.

“Luna?” Celestia asked as she woke up looking over at her sister who’s head was bowed. “Is everything alright?”

“Yes, sister.” Luna replied her head low and the elder alicorn smiled before rolling over weakly as the princess lifted her eyes to reveal bright green. “Everything is quite alright.”

“Celestia!”

The week passed by and Celestia noticed some changes in her sister but the Gala distracted her. She knew Luna wouldn’t attend because of her dream duties, yet something was off.

“Princess Celestia?” Twilight’s voice jerked her out of her stupor and she looked down at her fellow Princess. They were taken to Canterlot after being released from the hospital and Twilight had offered to help prepare the Gala for her.

“Oh Twilight, is everything going smoothly?” the Princess of the Sun inquired her eyes trying to remain focused on the newest alicorn but her eyes began to wander when she saw Luna walking by.

“Yes, I organized everything, sent out the invitations, all is left is the decorating.” the Princess of Friendship replied a look of pride on her face before it dropped. “I just wished Aqua Star was here to see it.”

This caught Celestia’s attention and she wrapped a hoof around her student saying. “I’m sure she was have been unimpressed yet impressed at the same time.”

Twilight thought about it for a moment before smiling sadly as she thought. ‘That is true, she would have been bored with all the chatting.’

“Twilight, I’m sure that we all would have liked to see her here, but Midnight Sun would like it if he was allowed outside of your castle for once.” Celestia suggested with a smile and Twilight nodded her head before going off. The elder alicorn looked around for her sister and walked over to her younger sister.

“Luna, are you alright?” she asked and her sister stopped what she was doing to look at her sister and say. “Yes, I have never been better.”

“It is just that you are normally asleep at this point.” the raiser of the sun pointed out and Luna glanced to the side as if to take in her surroundings again. “I noticed you’ve been doing that a lot lately.”

“I can not take in the beautiful day that my sister has made?” Celestia was taken aback by the question but her expression softened. “Do not worry Celestia, I’ve been doing my duties at night.”

"I just don’t want you to exhaust yourself.” the elder alicorn commented as they walked to the balcony together. Luna followed after them panic in her eyes as they began to lower the sun and raise the moon… together. Her eyes followed the moon as they sky darkened.

“What do you want from me?!” she shouted watching herself turn as if to reply but shook her head before looking back at the moon. The Princess of the Night fell to the ground tears welling up in her eyes. A hand touched her shoulder causing her to look up to see Aqua Star standing there before looking towards the moon. Silver strands took her gently before drawing her up to the sky as she whispered. “Not all that has died is lost forever. For now I shall take my place amongst the stars.”

Luna wanted to reply, yet if she spoke any names from the world she locked away the door will be open and danger would come at them from all sides. Her cyan eyes gazed at the shape in the stars that had appeared there before looking at her sister and the creature that resided in her body. They were both amazed at the new constellation yet once again the being looked at her and the eyes flashed a bright green. She glared at it swearing that before anything was revealed to her sister she would re-enter her body.

Author's Notes:

I do not own MLP or any other series in this fanfic. This has been updated.