The library was noticeably more empty now than it had been before Spike went upstairs. There were only a few scattered groups of ponies still hanging around, most had already left. It was surprising how little time it took for ponies to start clearing out, though the celebration at the town hall was just a couple hours away. Everypony was probably just excited to see the Princess raise the sun. He could hardly believe how late into the night it had gotten already.

All the mares that he and Twilight had met with today were still around, with a few of them talking to each other by one of the snack tables. A small group of stallions had also stuck around. He recognized most of them as they were the same ones who'd whistled at Twilight earlier. At the moment though they were more focused on two mares in the corner of the room that were passionately making out with each other on the floor.

One was green with a lighter green mane while the other was a beige color with a pink and purple mane. They seemed utterly oblivious of the small crowd of stallions enjoying the show and were clearly drunk out of their minds. They'd taken off most of their clothes already too, leaving them wearing nothing but their underwear. Spike did his best to not stare too long.

Hopefully, they didn't get too into it in here. A similar scenario had played out at one Lemon Heart's parties a few years back. There had been quite a mess to clean up afterward. Though, there was a rather telling series of brown splotches on the floor that started from the now empty punch bowl and led out the front door.

'Wonder what happened there...' He pondered, growing a little worried for Twilight upstairs.

Thankfully, it appeared that their suitcases hadn't been messed with. They were still sitting on the small round table at the center of the room where he'd left them when they arrived. Walking over, he hefted each one up onto his shoulders with a grunt.

'Better hurry and get these back upstairs, Twilight will want to get started on her report as soon as possible.'

"Oh, hold on just a moment darling." A beautiful voice called out to him.

Swirling around, Spike became paralyzed as Rarity slowly strode towards him, wearing a rather sultry looking smirk that sent tingles rushing through his body.

"Oh, hey R-rarity," He replied with a nervous smile.

"I feel I must apologize for not catching your name earlier today. What was it again?" She asked, standing quite close to him.

"It's uh, S-spike! My name is Spike." He stammered dumbly, much to Rarity's amusement. He tried his best not to stare down at her cleavage but with her so close it was difficult to avoid.

"Well, Spike, I happen to have a little proposition for you, should you be interested~?"

"A p-proposition, for me?" He replied, a multitude of lewd fantasies running through his mind in quick succession.

"Yes, I was wondering if you might be so kind as to swing by my boutique sometime tomorrow afternoon. I am in great need of some assistance with the suit measurements for a new line of stallions' formal wear, and you-" She paused, running the tip of her index finger down the center of his chest, "-would be a perfect model~."

"Yes!" He almost shouted, immediately blushing at his sudden outburst. "I-i mean, I'd love to!"

Rarity giggled at his flustered behavior.

"And don't worry about scheduling anything darling, I shall be available at any time tomorrow, so feel free to pop in whenever you're ready. I'm already well aware that you have another little get-together planned with a certain pegasus and I wouldn't recommend passing that up either." She said, eyes flicking back to Fluttershy who was watching them closely from where she had been talking with Rarity.

"O-okay."

"Wonderful! I promise you won't regret it~,"

Her ass swayed hypnotically as she walked back towards Fluttershy. Spike was only shaken from the sight once he noticed Rainbow Dash was glaring at him from across the room. Turning back around, he quickly hurried upstairs.

'First Fluttershy invites me over to her house, wanting to learn more about me, and now Rarity wants me to come over on the same day for measurements!? What is even going on today?! Next thing you know Twilight is gonna try to flirt with me or something...' He thought, mentally praising Celestia for sending them to this wonderful town.

Reaching the top of the stairs, he awkwardly stretched his arm out to the doorknob while trying not to drop either of their suitcases. Eventually, he was able to narrowly reach it and, after some fumbling, finally got the thing open.

"Hey, Twilight. I'm back with the suitcases." He called out, pausing as he was hit by a foul smell.

As he stepped inside, the suitcases on his shoulders blocked his view of most of the room.

"Thank you, Spike. Just set them down on the desk over here." He heard Twilight call from his right.

But as he turned towards the sound of her voice, his cheeks flushed as he noticed that something else that had changed. Twilight was still sitting down at a desk, though there was now a huge brown bulge protruding from the back her panties. He made his way over, trying not to focus on it.

He would likely be helping Twilight write her report for the next couple of hours before the celebration and It would a whole lot easier if he wasn't hard as a rock the entire time. Still, just from the size of the round bulge alone, Spike couldn't help but ask.

"So, uh, I see you had another accident?" Spike asked innocently as he set down the suitcases on the desk. Twilight paid him no mind at first, staring down at a piece of paper she was busily writing on. When she did finally look up, it took her a moment to register his question.

"Huh? Oh, yea I did. I think it had something to do with that punch though. I'd thought I was feeling another fart, but before I knew it, I'd filled my panties again." She explained casually, turning back to her writing.

'Well great, now I'm getting hard anyway. Damn it Twilight, why did you have to say something like that? It really doesn't help me get over my whole 'I have a crush on my big sister' thing. I swear, if I didn't know you, I'd think you do this on purpose sometimes.' Spike thought, sitting down in the other chair from earlier and quickly crossing his legs to conceal a different kind of growing bulge.

Using her magic, Twilight swiftly unzipped the two suitcases without looking and starting pulling out the books she'd brought along, organizing them into different assorted piles. However, rather than immediately start using them for her report, she instead turned her attention back to the suitcases and lifted out the two remaining sets of clothing she'd brought along for the trip.

"Which one of these do you think will look better on me for the Celebration?" Twilight asked, hovering both in front of him. She'd turned her head to look up at him, a strange sparkle in her eyes. It almost seemed like she was trying to analyze every detail on his face.

He was a bit surprised that she was even asking him, though maybe she was just worried about what Rarity had said about her uniform earlier? Normally Twilight just threw on whatever she had available in her dresser. Even when meeting with Celestia she usually just something wore casual clothing.

The first outfit being presented was one of Twilight's formal black suits. It seemed like something you'd see a big CEO or secretary wearing. Accompanying it was also a black lace bra and a matching pair of panties. Images of Twilight working as a busty accountant briefly flashed through his mind.

Strangely enough though, he couldn't quite remember ever seeing her wearing any of her suits before. She usually avoided most really formal attire, opting for more casual options instead. The only reason she even had them at all was because they'd been handed down to her when they moved out of Twilight's place many years ago. She'd likely stuffed one of them into her suitcase without even thinking.

The other set of clothes, on the other hand, he'd seen her wear many times in the past. It was just a simple purple T-shirt with her cutie mark on the front, paired with some basic blue jeans. Despite being pretty old now, they still fit her quite well, though the hem of her shirt was a little high now, often showing off a little strip of her midriff. No bra was presented to go with it, though there was a pair of light pink panties that also had her cutie mark on them.

There was nothing particularly provocative about it and it was one of Twilight's more iconic outfits in his mind. He could remember the many bathroom-break free study sessions he'd seen that outfit go through over the years. It was quite durable, and for him, it just screamed 'Twilight' in every way.

"Well... I guess that one would look pretty nice." He suggested pointing to the t-shirt and jeans combo.

Strangely, Twilight didn't respond at first, choosing to instead study his face for a few more seconds before sighing. She almost seemed disappointed.

"Thank you, Spike." She said, folding both outfits back inside the suitcase before grabbing one of the books to help start her report.

"Yea, no problem..." Spike replied. He knew that look. She always looked like that when she was watching for something specific during one of her experiments or during a lecture. He wondered what that had been about...

Still, he had to agree with her choice to get changed into something new before they left for the celebration later. There was no way she was going to get away with just wiping her ass a little bit this time around. Glancing down when he was sure she wasn't looking, he stared at her shit-filled panties where they sat on the chair behind her butt.

'Yea, those are probably gonna get trashed...'

Twilight leaned on the edge of the bathroom sink, staring back at herself in the mirror. She'd just finished taking a shower and was now wearing the outfit that Spike had picked out for her. She'd just barely been able to finish writing her report for the Princess, though she honestly wasn't feeling too proud of it. She'd mostly just expanded on what she already stated in her letter. Hopefully, though, it would be enough to convince the Princess of the seriousness of the situation.

While writing the report, Twilight had hoped she gleam more information about the legend itself or the mysterious Elements Of Harmony that were originally used to banish Nightmare Moon, but she didn't find anything new. However, all that aside, something else entirely was currently prodding her brain. Something which had been distracting her ever since he popped into her head this morning. Spike.

Since the possibility had occurred to her, Twilight hadn't been able to get the idea that Spike might possibly be into her out of her head. Making him choose between the two outfits she'd brought along was meant to be some kind of test, but she didn't really know what she was even supposed to be looking for and the results weren't particularly conclusive. It wasn't every day that she was tasked with trying to figure out if a stallion, or a dragon, in this case, might be into her. Much less somepony like Spike, someone she'd raised since he was hatched.

'Ugh, why do I even care anyway? It's probably just the stress getting to me.' With an exasperated sigh, Twilight pushed the confusing thoughts away.

Cleaning up after her accident had been a fairly simple task thanks to the strange consistency of her mess. Despite the amount of poop that had flowed out in her panties and how liquidly it felt, it was super easy to clean up, almost as if it had been designed that way. She had even been able to save her panties, though they now carried a sizable stain on the back. Still, the smell would have most likely have lingered on her whole body regardless of how well she wiped, so a shower had been necessary.

While disposing of the smell of urine with a quick spell like she had this morning was a fairly simple task, fecal matter tended to be a bit more complicated. Like trying to grow a mane or tail, magic just seemed to recoil away from solid waste. Twilight didn't mind the shower though, it made her feel clean and refreshed again.

Her uniform and panties were left in a small pile by the shower. Once the celebration was over and she was able to convince the princess of her claims, she would have to find out what kind of laundry machine this library had, if any at all. Unlike Canterlot, wherein every single house was built with one pre-installed, rural towns like these were generally less well equipped.

Twilight was about to turn and exit the bathroom when she suddenly felt her bladder throb. It was near full capacity. With an annoyed sigh, she quickly yanked down her pants and panties and planted her butt down on what was the only toilet in the entire library. The one downstairs only had a sink and a bathtub for some odd reason.

Spreading her legs slightly, she relaxed her bladder muscles, allowing about an entire day's worth of urine to stream down into the toilet bowl. Part of her kinda wished that she'd felt the urge to go before getting changed.

'It would have been nice to wet myself in my old school uniform again. Would have brought back some good memories from my senior year at Celestia's school.' She thought, reminiscing.

Then again, it was probably for the best that she felt this urge when she did. It would have been pretty embarrassing to suddenly feel desperate while in the middle of the celebration, or worse, right in front of the princess. She couldn't recall ever seeing any bathrooms in the town hall building...

After peeing, she exited the bathroom, finding Spike standing by the small window next to the bed they'd be sleeping in later tonight. He was looking out at something with a puzzled expression.

"Is there something wrong Spike?" Twilight asked, distracting Spike from the window for a moment.

"Huh? Oh, hey, you look pretty good in that." He complimented.

"Oh, um, thanks..." Twilight said, blushing as she found herself Twirling one of her bangs. Again she felt those butterflies in her stomach.

"Okay, so correct me if I'm wrong, but hasn't the moon always had a pony's silhouette on it?" He asked, sounding mildly concerned.

"As far as I can remember, why?," Twilight asked, curious as to what he was getting at.

"Well, it's not there anymore."

"What?!" Twilight shouted, running over and butting him out of the way so she could look out the window.

Sure enough, the moon's face was completely barren, with no sign of the famous 'Mare In The Moon' that had been there all her life. Twilight's pupils shrunk as she made realized what this had to mean.

'It's happening now!'

Wasting no time, Twilight dashed to her desk and swiped her report. The princess wouldn't be back at her palace in Canterlot right now, having probably arrived for the Celebration so it would be pointless trying to send anything to her via Spike's dragonfire. They had to get to the town hall as quickly as possible!

"Come on Spike! We have to go, before its too late!" She yelled, grabbing him with her magic as she rushed for the door.

Twilight burst through the large open doors of Town Hall with Spike right behind her. They were arriving just as the celebration was about to begin. A large crowd of ponies was packed into the main hall, though none of them seemed to be aware of the moon's sudden change in appearance.

'Why doesn't anypony ever look up at the night sky anymore?!' Twilight fumed, looking for the easiest way to get through this crowd so she could go find the Princess. She would have arrived by now and was likely waiting to make her appearance up on one of the balconies.

But as Twilight attempted to push her way through the dense crowd of ponies, a sudden hush swept over the room. The town's mayor had stepped up on a stage on the far side of the room, clearing her throat as she started her speech.

"Fillies and gentlecolts! As mayor of Ponyville, it is my greatest pleasure to announce the beginning of the Summer Sun Celebration!" She proudly declared.

Cheers filled the air as ponies couldn't wait to see their beloved princess. Though with the crowd getting this rilled up, Twilight was having an even harder time getting through them. She just hoped nothing crazy happened before she could warn the princess.

Up high on one of the balconies above, Rarity was performing a few last-second checks on the decorations, tightening a bow here and hanging a strip of fabric there. Flying up in the air on the left, Fluttershy hovered high above the crowd, preparing her bird choir to sing. She had on her hoodie again and was clearly doing her best not to stand out, despite hanging in plain sight.

"In just a few moments, our town will witness the magic of the sunrise, and celebrate this, the longest day of the year!" The mayor continued, prompting another bout of cheering from the crowd before it quickly went silent again. "And now, it is my great honor to introduce to you, the ruler of our land, the very pony who gives us the sun and the moon each and every day, the good, the wise, and the bringer of harmony to all of Equestria..."

On cue, Fluttershy's birds began singing in harmony as a spotlight was turned to the balcony where the Princess was about to make her appearance.

"Princess Celestia!"

Two large curtains were yanked aside at the height of the music, revealing... nopony at all.

'Oh no...' Twilight thought, fearing the worst.

There was a long and awkward silence before a few worried murmurs and some concerned chatter began to crop up in the crowd.

"Ah... please hold on just a moment everypony, I'm sure she's coming!" The mayor called, though she didn't seem too confident herself as she held an increasingly more anxious smile.

"Ooo! I love guessing games! Is she hiding?!" Twilight heard a familiar hyper voice gasp from somewhere in the crowd, the mare clearly not realizing the seriousness of the situation.

After a few tense moments, Rarity emerged onto the balcony where Celestia was supposed to be, looking utterly bewildered.

"She's gone!" The fashionista announced in despair.

There were several gasps from the crowd as ponies started to panic. The mayor attempted to control the situation but nopony seemed to be listening.

Another gasp from Rarity drew everypony's attention back up to the balcony again where a mysterious dark cloud had just appeared in the air above her. It swirled around just behind the unicorn, spinning faster and faster as it descended down from the ceiling. Eventually, it started to coalesce together as it formed into a tall dark female figure.

"I-its... Nightmare Moon!" Twilight muttered shakily under her breath, a sense of dread filling her body as she watched the alicorn from her book take shape before her eyes.

Two large leathery wings spread out behind Nightmare Moon, looking more like a bat's wings than a pegasus's. Her coat was dark blueish black and her mane and tail flowed just like the princess. Both seemed like portals into night sky itself as stars glimmered in front of a deep blue background. With a sinister grin, she revealed a mouth full of razor-sharp jagged teeth. Two icy cyan eyes scanned the deathly silent crowd below, like those of a wild cat hunting for its prey.

She was easily as tall as the princess and held almost the same angelic figure as well. She wore smooth plates of armor, vaguely resembling something Twilight had seen once in one of Canterlot's oldest museums. Her large DD-cup breasts lay mostly exposed on her chest, her skimpy armor leaving very little to the imagination for the few stallions who weren't worryingly eying her serrated teeth.

"Oh, my beloved subjects~, it has been so long since I've been able to see your precious sun-loving faces." Nightmare Moon said with a scowl, her deep voice sending shivers throughout the crowd.

A quiet hissing noise brought Twilight's attention momentarily back down where she noticed that one of the terrified mares in front of her was wetting herself, frozen in place as a yellowish pool rapidly grew around her trembling feet. If she hadn't gone before leaving, that easily could have been her right now.

"Hey!" A familiar raspy voice suddenly shouted up at the alicorn.

Rainbow Dash flew up from the crowd and glared angrily at Nightmare Moon. "What did you do with our princess!?" She demanded, ready to rush the alicorn head-on.

A dark chuckle echoed through the hall. "What? Am I not royal enough for you? Don't you know who I am?!" Nightmare Moon scolded, her eyes flashing white.

Rainbow growled and almost went for it but was held back at the last second as a lasso was tossed around her waist from below.

"Whoa there, Nelly!" Another familiar voice grunted.

"Hmph, does my crown no longer count now that I have been imprisoned for a thousand years?" Nightmare Moon sneered, leaning down and coming face to face with Rarity, who had been standing motionless next to her the whole time. "Did none of you recall the legends? Did you not see the signs?" She asked mockingly, delivering a smack to Rarity's cheek with a portion of her ethereal mane.

"Hey, leave her alone!"

Twilight froze as she heard Spike shout out angrily behind her. Disregarding Rarity, Nightmare Moon turned to stare down at the being who dared to speak up in such a manner. The crowd around both Spike and Twilight quickly parted, making ample room around them. With Nightmare Moon's attention now fully directed at him, Spike felt his confidence draining as he struggled to not cower under the mare's fierce glare.

"I-i did!" Twilight interjected, drawing the alicorn's attention. "A-and I know who you are too! Y-your... Nightmare Moon!"

The name sent whispers through the crowd as many ponies tried to remember where they'd heard that name before.

"Well, well, well somepony who actually knows who I am? If that is indeed the case, then you should also know why I am here!" She declared, giving Twilight a cold look. She'd seen it once before, in a dream...

"You're here t-to..." Twilight gulped.

"Remember this day ponies, for it was your last! From this moment forth, the night shall last forever!" She boomed, bolts of white lightning shooting out from her mane as she started to cackle with manic laughter. Immediately panic ensued as ponies started stampeding and screaming to leave the hall as bolts of magical lightning rained down around them.

"Guards, seize her! Only she knows where the princess is!" The mayor commanded, calling out to the royal guards who had up to this point been slackjawed from their posts at the door. They quickly took to the air and rushed towards the Alicorn, their sharp spears at the ready.

"Stay back you foals!" Nightmare Moon commanded, her eyes lighting up as she directed two large bolts of lightning that struck each of the guards directly in the chest, sending them both careening back to the ground in a smoldering heap.

Letting loose another bout of crazed laughter, Nightmare Moon started to transform back into a dark purple cloud. With a grunt, Rainbow Dash finally got get loose from Applejack's lasso, but it was too late. The dark mist darted out of the building through an open window, a rainbow trail flashing past Twilight and Spike as the pegasus attempted to give chase. With the hall now mostly clear of ponies, Twilight grabbed Spike by the arm and dragged him outside, making a b-line for the library.

"Come on, Spike! We've got to find out more about the Elements Of Harmony! They could be our only hope if something has happened to the princess!" Twilight urged, trying not to think about what Nightmare Moon might have already done to her...

With Twilight dragging him at full speed, she and Spike got back to the library in record time. Immediately they started busily sorting through book after book on the shelves in the main room, searching for anything that might shed some light on the mysterious 'Elements Of Harmony' that Twilight was talking about.

She was frantically searching on the other side of the room, but so far, neither of them had found anything. Spike was feeling anxious, not only about what they'd just witnessed at the town hall but due to the way Twilight was acting. He'd never seen her like this before. As she went from book to book, she was constantly mumbling to herself, and he could almost make out the beginnings of tears in the corners of her eyes.

To be perfectly honest, Spike had never expected Twilight to actually be right about this whole Nightmare Moon thing, even when she explained it to him on the train. But there was truly no denying it now.

'I really hope Celestia is alright...'

While it was true that Twilight was the one who hatched and raised him for most of his life, whenever she went to school, or if something else prevented her from being around for him, Celestia would always make time to take care of him in her absence. In a way, she'd become something of a second mother to him. The thought of something bad happening to her didn't sit well with him at all.

Spike stopped searching for a moment to rub his tired eyes. He and Twilight had both been awake since very early this morning and while Twilight was used long bouts of sleeplessness, he was not. Still, he felt determined to work through it.

*Slam!*

But before he could continue searching for answers, he instead found himself being pinned to the wooden floor of the library while a very angry looking rainbow maned pegasus straddled his chest and held up the collar of his shirt with a right hook readied and aimed for his nose.

"You were sure quick to leave us alone back there! What? Was this whole thing just another part of your evil plans?! Where is our Princess!?" She demanded, rearing back for a punch.

"Hey! Get off my dragon!" Twilight suddenly shouted from across the room, her horn alight with a bright purple aura as she readied a spell.

"Your dragon huh? Ha! As if! I know you're in on this whole thing! He's already used his freaky dragon magic to turn you into his own personal unicorn sex slave!"

"S-sex slave!?" Twilight stammered, her face turning bright red at her accusation. "I-i am not his-"

"Rainbow Dash!" Applejack's voice boomed from the partially broken down front door of the library. The rest of the mares they'd met today were standing just outside behind her. "Simmer down and get off a him! He ain't part of this mess, and she certainly ain't his slave!"

"Indeed!" Rarity agreed. "In fact, I find that he is quite the gentlepo- er, drake." She added, stepping next to Applejack and giving Spike a wink.

Rainbow Dash turned back to glare down at Spike, squinting suspiciously. With an irritated grumble, she finally let his collar go and stomped off to the far corner of the room.

Rubbing the back of his head which had hit on the floor pretty hard when she tackled him, he slowly got up. With a frustrated sigh, Applejack looked between him and Twilight as the others came inside.

"Now, I'm sure as ah can be that the two of you ain't part of whatever's goin on, but ya'll do seem ta know a lot about it." She said, looking specifically at Twilight. "Care to fill the rest of us in?"

Crossing her arms as she pushed past Rainbow Dash's accusation, Twilight sighed and rubbed her temples.

"I've been following the legends of a mare called Nightmare Moon from a book that the princess sent me, but... I was too late to warn her in time. But, from what I've read, there are these mysterious artifacts called the Elements of Harmony that I think are the only things that can stop her." Twilight started to explain, at the same time using this moment to refresh her own memory.

"B-but, I don't know what they are, where to find them; I-i don't even know what they actually do!" Twilight ranted, clearly upset that she had not been able to make anywhere near as much progress as she'd hoped to. There was little to no chance that there was anything in this small town library that would ever help.

"The Elements of Harmony: A Reference Guide." Pinkie's bubbly voice read off in the corner of the room as she stared at the one bookcase that they hadn't checked yet.

"What?!" Twilight shouted, teleporting next to her in an instant before snatching the book off the shelf. "How'd you find this?!"

"It was under E!" Pinkie sang, bouncing happily around the room as Twilight stared up at the letter 'E' carved above the shelf. In fact, all the shelves shared similar labels that she hadn't even noticed yet...

"Oh..."

Opening the book with her magic, Twilight silently skimmed through it while others waited eagerly for more information. It wasn't long before she let out an immense sigh of relief.

"Okay, I found something! According to this, there are six Elements of Harmony. However, only five are known: Kindness, Laughter, Generosity, Honesty, and Loyalty. Unfortunately, the sixth is a complete mystery. The last known location of each element was in the Ancient Castle Of The Royal Pony Sisters. This castle is apparently located in what is now called... The Everfree Forest.

Author's Notes:

Fun Fact Of The Chapter: If you didn't know, you cannot hum anything properly while holding your nose.