Celestia strode confidently down one of many long halls in Canterlot castle, her brow furrowed and her jaw clenched tightly. Beside her strode a much shorter pony who wore a tattered cloak over his body, obscuring his cutie mark but not the majority of his teal fur. Though neither spoke for the moment, a tense atmosphere hung over both parties, with Celestia thinking deeply on the male’s words.

“I still think you are overestimating her.” Celestia remarked as the pair strode past another door flanked by guards. “She was easily the least intelligent member of the elements of harmony. She also had little to no proper schooling and only barely scraped by when it came to her studies in highschool.”

“Though she may not have applied herself when it came to highschool, that does not mean she is stupid.” Countered the male. “Her ego has always been her second largest character trait beside her loyalty, and with it running the show there is no telling what he is capable of.”

“Those consumed by ego are rife with hubris.” Celestia flippantly replied. “I’ve taken down more self aggrandizing egotists then I care to count. In the end they always either underestimate their enemies or overestimate themselves.”

“You have not faced something like her.” Growled the male. “The family has worked tirelessly to create a being capable of matching an alicorn in both speed and wits. She is it.”

“Really? You think Rainbow Dash has the brain power to do something like what you are suggesting?” Celestia deadpanned, turning to the stallion. “You are aware that she is the same pony who was so stupid that after hearing that it was chilly outside, she grabbed a bowl and a spoon expecting free food.”

“Her inability to understand context clues aside, I think you’ll find this is a different situation entirely.” Retorted the male.

“Really now? And how exactly is it different then that or the numerous other times she did something disasterously dumb?” Celestia asked, raising an eyebrow. “Because I could go on for quite a while, with examples.”

The hooded pony slammed his hoof against the ground. “You do not understand. Those are all situations that require you to understand social cues, to have empathy and understanding. She does not have those things.”

Celestia snorted and turned away, the male quickly following after her as she strode down a different hallway. “I’ve taken down many monsters that would have burned the world to accomplish their goals. She is not even new in this regard.”

“I promise you have not met anything like her.” Declared the stallion. “All the alchemical conditioning, and experiments have been activated somehow. She is beyond a normal pony, and by now is perhaps even beyond an alicorn.”

“You worry about my sister.” Celestia stated without looking.

“Of course I do. Her attacks have stopped, and no sightings have been reported for almost two entire days.” Reminded the stallion. “She is planning something big, something that just so happens to coincide with the moment your sister went out in order to try and hunt her down.”

Celestia shook her head. “Luna has lowered the moon on time, and I have even contacted her via telepathy. She is fine, shaken but fine.”

“What did she say?” Asked the stallion. “What were her exact words?”

“She said that she had engaged the enemy but that Rainbow Dash had escaped justice.” Celestia remarked. “Why are you so intent on knowing exactly what she said?”

“Because that isn't Rainbow Dash. I know her and I know she would never, ever run.” Proclaimed the male.

Celestia sighed. “I grow weary of your paranoia, she is but one mare. Alchemically enhanced or not we have already destroyed two of her little hide outs and have nearly completed work on a spell that would undue her sick ‘work’.”

“She has more than two hideouts, and I’m absolutely certain that she is unbothered by the fact that you can retroactively change the father of her unborn foals. In fact I would bet that it was part of her plan for you to do this.” Stated the cloaked pony confidently.

“Now that is nonsense. If there is one thing we can agree on it is that she is a pegasus, not a unicorn and only a unicorn would be able to use such a spell in the first place.” Countered Celestia as they passed by a stain glass window depicting the fall of Canterlot and the changeling invasion.

“She has been shown to be able to bring ponies over to her side before. Through force, intimidation, or by simply breaking their minds and molding them anew. And thats without even considering the fact that certain alchemical reagents can mimic spells provided you know which ingredients you need and have an in depth understanding of said spell.” Retorted the mortal pony.

Celestia sighed and slowly shook her head. “I’ve studied alchemy for centuries and never discovered that such a thing is possible.”

“It is indeed possible, but the family has kept that knowledge for ourselves.” The pony extended a hoof and stopped the alicorn dead in her tracks, their eyes meeting. “If you have spoken telepathically with your sister I urge you to gather the guard and seek out her last known location right now. It may be your last chance to strike back before she enacts whatever mad plot she’s concocted.”

Celestia’s gaze narrowed, studying the male’s features, from his rainbow mane, to his red irises and prominent jaw line. “I find your lack of faith disturbing. We can handle a single psychopath and trust me when I say that we will do what you should have done the day she was born.”

The male pulled his hood a little higher, obscuring his features once more. “Then you have already lost. The family will be leaving Equestria shortly. Hopefully we can escape whatever is coming.”

“Fine then. Run and hide while I clean up your daughter’s mess.” Celestia spat. “Maybe after this is dealt with I will dig you out of whatever hole you end up cowering in and give you a taste of the justice you so deserve.”

The rainbow maned male sighed and shook his head. “If you survive the fallout with your mind in tact, I would look forward to such a future.”

With that, the pony turned and walked away, leaving Celestia standing alone, the alicorn feeling angry, as well as a little confused.

Stomping her hoof, the alicorn turned and strode away, her hootsteps growing quieter as she slowly calmed herself. As she walked, the alicorn grew tempted to do as her former advisor had demanded of her and to gather the guard in preparation for a quick strike. That urge was quickly struck down however, as it was foolish and short sighted in her opinion.

The guard were needed to keep the peace in Equestria, and calling them all just to go after a wild goose chase felt downright irresponsible. Luna was not far after all, the alicorn having mentioned that she was already on her way back mere hours ago. Glancing out the window, Celestia smiled at the morning sun, its golden rays illuminating her gleaming city for all to see.

The sight made Celestia’s bosom swell with pride, as Equestria was indominitible, as was the alicorn herself. They had faced down tyrannical gods, mad ponies, and foriegn monsters the likes of which the world rarely saw. This most recent tragedy would be just another footnote in history, Celestia thought to herself, one that would be unworthy of even receiving a window due to its graphic nature.

Celestia was also tempted to go to the meeting room she had set aside to discuss how her task force was doing, but resisted that as well. The meeting itself was only set for an hour from now, and Celestia doubted anyone would even be there yet. Pausing mid step, Celestia felt a new urge, this one different from the ones she had felt until now, one that was also far more convincing.

Turning around, Celestia started to make her way towards the vault which held the records of her newest spell, and all the reference materials which had made such a spell possible in the first place. The vault it was in was incredibly secure, and after thinking about it, Celestia realized that just reviewing the spell would help set the alicorn’s mind at ease. Following that urge, Celestia picked up the pace, eager to look over the fruits of her labor while also spending her time doing something productive, rather then just pacing in circles until Luna got back to the castle or her meeting began.

Slipping down a flight of stairs the alicorn couldn't help but feel as though something was off. The guards were where they should be, and everything seemed to be in order, yet Celestia found herself worrying regardless. Was this merely anxiety that she had been ignoring this entire time? Or was there something genuinely wrong?

Celestia wasn't certain of the answer, but she was determined to find out one way or another.

Making her way towards a seemingly random door, Celestia pushed it open, closing it firmly behind her and locking it securely. A quick spell ensured that no one could open it, and a glance around the room told her that the area had yet to be breached. The walls, floor and ceiling were all a pale, eggshell white, all save for the large circular steel door that covered one wall, which was a slate grey.

It lacked any manner of obvious entry save for a single hole in the centre, one Celestia would require to turn with her own horn. Making her way over to the door, the alicorn did just that, the door clicking and beginning to open a second later. The huge steel barrier swung outwards, and Celestia took a step back, watching the vault’s interior slowly came into view.

What she saw made her sigh, and begin to relax, her tiny library remaining undisturbed, as was the master scroll and all the copies she had made. The central table which held all her notes and final products was exactly as she left it, as was the four book cases which surrounded it. Everything was exactly where it should be, yet as Celestia looked around, she felt a sixth sense begin to tingle, telling her she was not alone.

No sooner had that sense been activated then flames suddenly sprung into existence all over the tiny library. Stranger still was the fact that the fire seemed to start from nothing, the prismatic flames engulfing every last part of the vault in mere seconds. Deciding to figure out the source of the inferno later, Celestia quickly lit her horn, intent on saving her work before it was snuffed out.

A bubble was formed around the entrance to the vault, and another spell removed the air from within the vault. Only for the strange fire to continue to burn, rendering books, furniture and paper to little more than dust. The inferno was unbothered by the alicorn’s efforts despite the fact that it should have run out of fuel and petered out almost immediately. Celestia began to panic, her mind quickly going through the possible fixes to this problem.

Water was right out, as that would ruin everything anyway, as were most smothering agents, all save for an extinguisher spell that Twilight had made after she had come back from the human world. Lighting her horn, Celestia went through the motions of casting it, only to find that everything was already destroyed by the time she could even finish it. The spell fell apart but the magic did not dissipate and Celestia scanned the area, ready for anything.

“You’ve shown off your little trick now come out and face me, coward.” Celestia shouted.

Something moving from behind her made Celestia spin in place, but her enemy was faster then her, and she felt something prick her back. Magic coursed through her horn, and a wave of fire exploded outwards from Celestia’s body, hopefully incinerating anyone foolish enough to have gotten close to her. A hoof connecting with her back leg proved such an assumption incorrect however, and Celestia lurched forward, while readying another spell.

Until a sudden wave of exhaustion emanated from her spine, making her legs tremble and her spell to fall apart. Grunting in exertion, Celestia flapped her wings hard and spun around once more, this time putting the wall behind her. Revealing a grinning Rainbow Dash standing behind her, an amulet with a large jade eyeball on it hanging from around her neck.

“You know that venom coursing through your veins is powerful enough to put down a bull hydra inside a minute.” Rainbow Dash pointed out.

Celestia grunted. “You will regret this.”

“No, I don't think I will.” Rainbow Dash remarked with a smirk. “Though I am regretting drawing the short straw in this circumstance, but you’ll understand what I mean by that in a few minutes.”

Celestia tapped her right shoe, and enacted a cantrip, causing a built in teleportation spell to take her directly into her innermost sanctum. Collapsing on the floor, Celestia lit her horn, and threw open the curtains, bathing her room in the light of the morning sun. While also illuminating Rainbow Dash who sat on a nearby chair, a smirk on her face and a newspaper in her grip.

“The home spell right?” Rainbow Dash asked. “Your sister told us about your little ace in the hole.”

Rage coursed through the alicorn’s body and even as her body began to fail her, she lashed out with her magic, sending a beam of white hot fire directly at the pegasus. Who gripped a different, wire covered necklace hanging about her neck, instantly becoming a prismatic blur, and dodging around the beam with ease. Celestia snapped off a few more less intense rays, each one going wide and being rendered useless by the pegasus’ incredible speed.

In the blink of an eye and Rainbow Dash had crossed the distance, slamming a needle into the alicorn’s chest and forcing a green liquid into Celestia’s blood stream. The cloying weakness Celestia had been resisting grew even stronger, this time even extending up her horn and making her magic more difficult to call upon. Instead of panic, Celestia merely cast one final spell, causing a heat to begin to build in her chest.

“What was that last one? I don't recall seeing anything like that before.” Rainbow Dash asked, while jabbing the alicorn’s leg.

Celestia collapsed onto her side, grunting in pain.

Rainbow Dash shrugged. “I guess it was nothing. Oh and don't bother screaming for help. I made sure that no one will hear you or be able to magically see into this room.”

Celestia watched as the pegasus stroked her half erect shaft, causing the massive appendage to slip completely free from its sheethe. The absolutely enormous cock was intimidating, but after reading every report that had come across her desk in the past few weeks Celestia was still a little underwhelmed. Some ponies had claimed it was longer than a pony from tail to nose, and thicker than the trunk of a young pine.

This was only the length and width of a normal pony’s leg, which would be physically impossible to take for the average pony, but not so for an alicorn.

“You know I’m kinda sad my pheromones don't work on alicorns.” Rainbow Dash muttered as she slipped behind the princess of the sun. “It's always fun to turn a mare into a dick obsessed slut whose only desire is to pleasure this fat cock of mine.”

“Oh well.” Rainbow Dash shrugged and thrust forward.

Celestia grunted as she felt the massive appendage slip into her hole and spread her wide, the sheer girth making the initial penetration slightly painful. Celestia was a master of many things however, and one of those things was her own body. Utilizing that unprecedented level of control, Celestia began to squeeze down on the invader, a smirk on her face.

“Is that really all you’ve got?” Celestia remarked.

Rainbow Dash stopped mid thrust and blinked, her hooves gripping the other mare’s flanks a little tighter. “Wow princess, I didn't think you had it in you. I though I’d get the same silent treatment that Luna tried to give me.”

The comment about Luna made Celestia wish her spell would hurry up but Celestia kept her mind focused on the here and now. “Oh is that so? Well most of my lovers have been dragons, so your going to be hard pressed to intimidate me.” Celestia exclaimed.

“Really? Huh.” Rainbow Dash shifted her weight forward, her hooves shifting slightly to better grip Celestia’s flanks. “Is it the heat thing, or just the huge dicks?”

“That and the functional immortality. It's hard to get into a relationship if your partners keep dying or going impotent due to age.” Celestia quipped.

Rainbow Dash nodded. “Good point. Well don't you worry none. I’ll be sure to alter this bad boy to make it even bigger just for you.”

Celestia scoffed. “No matter how big you make it, you will still wield it like a club.”

Rainbow Dash’s eyes narrowed. “You want some finesse, fine. I’ll show you finesse.”

The alicorn’s next response died the second her rapist thrusted forward once more, pushing more and more of herself into Celestia’s now stretched hole. Even the alicorn’s welcoming pussy was pushed to its limit as the pegasus continued to ram herself deeper. Inch after inch were rapidly shoved into Celestia’s body, with the pegasus having to physically walk forward in order to fit more cock into the mare.

Each time Rainbow Dash did thrust it was hard, deep and at the end of it she pulled back slightly and gave her hips a short wiggle. This seemed to do its job though, with Celestia somehow managed to take over two feet of mare cock in no time at all. Then, with a soft thump, Rainbow Dash’s crotch rested firmly against Celestia’s sideways ass, a grin on the pegasus’ face.

“Wow you are fantastic. I am so keeping you for myself.” Rainbow Dash exclaimed.

“So you’ve got some strength in those hooves. That's not impressive in the slightest.” Celestia spat.

“Ha! Well prepare to be impressed!” Rainbow Dash declared.

The pegasus drew herself back before thrusting hard and fast, burying herself in the other mare’s hole repeatedly. It was obvious that the pegasus was showing off her speed and strength, with Rainbow Dash slamming herself forward as hard and as fast as she could. Normally such a frantic pace right off the bat would be too much for the average mare, but Celestia was anything but average.

With her spell continuing to build inside of her chest, the alicorn calculated the time she would need until it was complete only to realize that she would need to create an opening and soon. Using her powerful internal muscles, Celestia squeezed down on Rainbow Dash’s shaft, milking the pegasus’ titanic cock for all she was worth. This time Rainbow Dash wasn't surprised by the move, and continued her incredible breakneck pace without pause.

The heavy, meaty slap of Rainbow Dash’s balls impacting Celestia’s generous, plush posterior nearly drowned out the sound of Rainbow Dash’s frequent grunting. The scent of sweat tinged the air, though that smell was slowly being overtaken by the smell of sex and the powerful sting of Rainbow Dash’s pheromones. To Rainbow Dash it was heaven, the alicorn’s enormous butt serving as the perfect pillow for her hooves, and the perfect place to rest her balls.

To Celestia it was hell, but the alicorn was well acquainted with such a terrible place, and merely used her complete bodily control to stifle all feelings of pleasure. She would need her concentration very soon, and she would not allow herself to be distracted by her body actually enjoying the rape she was currently receiving. Instead she focused on ensuring her opening arrived exactly when it needed to, while also studying her enemy closely.

Rainbow Dash was strong, and had a powerful amulet on her side, but from what Celestia had seen earlier it needed to be touched to be activated. Which was more than enough of a weakness for Celestia to exploit when the time came. For now, she would just have to grin and bear it, pushing back against the pegasus’ thrusts and squeezing down on her cock.

“Fuck you are amazing.” Rainbow Dash grunted. “I usually last at least twenty minutes or so in order to show my future brood mothers what they are in for but I think I’m only gonna last half that time.”

Celestia merely smirked to herself. “So, why burn the research?”

Rainbow Dash groaned. “Oh come on. You totally ruined the moment we had there, but I guess I’ll answer your question kind of.” The pegasus leaned in close. “Its because my little helper already copied everything I needed.”

“Your little…” Celestia grimaced. “Scootaloo.”

“Ha, got it in one.” Rainbow Dash remarked with a smirk of her own. “But seriously. Unless you’re going to trade verbal barbs with me would you mind keeping your mouth shut?”

“Fine, I have gotten what I wanted.” Celestia replied flippantly.

“Whatever, lets just wrap this up so we can get to the main course.” Rainbow Dash muttered.

The pegasus’ pace increased even more, her hips becoming a blur as she threw herself into the simple act of fucking Celestia’s tight pussy as fast as physically possible. Which was just fine in Celestia’s opinion, as that meant she just had to lay there and take it while she waited for her spell to complete. Something Rainbow Dash hadn't seemed to notice, given how relaxed and confident she remained, even as the alicorn’s spell neared completion.

Rainbow Dash’s eyes closed tightly and her hips pounded forward with ruthless, unending fury, reminding Celestia of one of her past lovers. Though she wasn't as big as most of her draconic paramours, the pegasus certainly was fast, her thrusts coming in quicker then any dragon had accomplished. Still, the alicorn had experience on her side and never flinched, even as her cervix was occasionally brushed by the tip of Rainbow Dash’s mammoth dick.

It hardly even took any effort on Celestia’s part to resist what little pleasure her body was experiencing, the pegasus having apparently abandoned any pretense of finesse. To Celestia it was obvious that this was just about getting off, and enjoying herself by using Celestia’s body as she wanted. All the bluster from earlier had disappeared, the pegasus not even offering any further insults or comments before she was seconds from orgasming.

“Fuck yeah, here it comes you slut!” Rainbow Dash yelled.

Celestia subtly adjusted herself, turning her body slightly and ensuring that not a single drop of Rainbow Dash’s seed made its way past her cervix. Something Rainbow Dash herself evidently didn't notice, as she wore a wide grin on her face, confident in her victory. Litre after litre of futa cum splashed into the alicorn only to slip past the blockade that was Rainbow Dash’s flared cock head.

The feeling of cum running down her legs made Rainbow Dash blink and look down in shock. “What the hay? How did you manage to do that?” She demanded.

“The same reason I am able to do this, practice.” Celestia quipped, her horn glowing brightly.

“What the-” Rainbow Dash muttered, her hoof halfway to her necklace before a beam of energy reduced everything above her neck to ash.

Her cock continued to twitch even after Rainbow Dash’s death, though Celestia was able to kick the body slightly, causing it to tumble to the slide forcing her former rapist’s dick to slip out of her. “Thank god for arrogance.” Celestia muttered.

The welling fire spell had managed to burn away some of the weakness, though Celestia’s magic still seemed to be inaccessible now that she had used her spell. Still, with her opponent dead, and the danger removed, Celestia only needed to alert her guards and await their assistance. Reaching forward, Celestia began to slowly crawl her way towards the door, knowing instinctively that she didn't have the power necessary to break the muffle field her enemy had somehow managed to enact.

Her pace was slow, with Celestia only managing to gain an inch or two at a time, but if the alicorn was anything, it was patient. Her confidence vanished the second she felt something prick her back, and the alicorn turned to find Rainbow Dash standing triumphantly above her with a needle in hoof.

“Miss me?” Asked the pegasus with a wide, cocky smile.

“But I killed you. Noone can come back from that.” Celestia exclaimed in shock.

“Oh that one is still dead, see?” Rainbow Dash stepped to the side, revealing the corpse of another Rainbow Dash, who no longer had a necklace around her neck.

“That's impossible.” Celestia muttered.

“Oh it is very possible, you made sure of that.” Rainbow Dash replied.

“But how?” Celestia gaped.

“It took a little adjusting, but I managed to ensure that everyone could be given the gift of Rainbow Dash.” Declared the pegasus who rose into the air and extended her forelegs. “Not only will everyone be able to bear my awesome children, but they will bear another copy of me with all my memories!”

“That's…” Celestia’s words flickered and died, as did the last of her hope.

“Awesome right?” Rainbow Dash asked while nudging the alicorn. “Though I’m still a little pissed at you for killing that Rainbow Dash. She was the first to be born from Scootaloo and she was a really great planner.”

“There is no way someone like you could have done something like this.” Celestia stated before turning her head skyward. “Luna, this is not funny! Let me out of this nightmare right now!”

Rainbow Dash fell to the floor with a soft clunk. “Augh. I can't stand ponies like you. Just because I didn't care about english and math doesn't mean I’m an idiot.”

“Luna, seriously this is starting to really annoy me!” Celestia shouted.

The pegasus reached forward and grabbed the alicorn by the face, forcing their eyes to meet. “Look lady. This is happening. I’ve won, and your sister certainly isn't going to help you. Why I bet she's getting triple teamed by three other versions of me right now if she isn't giving birth to another copy.”

“I fell asleep at my desk, this is a nightmare. You are not real.” Celestia exclaimed while closing her eyes tightly.

“You know what? I don't care if you think this is a dream.” Rainbow Dash muttered before dropping the alicorn and letting her chin bounce off the floor. “I’ve won, and now I’ve got both of the alicorn sisters added to my little harem.”

Celestia closed her eyes tightly, and tried to remember the advice Luna had given her about escaping a nightmare.

While this was happening, Rainbow Dash trotted over to the balcony and smiled to herself. “Soon, everyone will have the joy of getting fucked by and giving birth to Rainbow Danger Dash.”

The pegasus blew a kiss to Canterlot. “Your welcome Equestria.”

Author's Note

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