The opening with Pinkie Pie IS relevant. I'm not spoiling anything, but...
It was a cool evening out in Ponyville. A slight breeze picked up as a pink mare returned to her home for the evening. Pinkie Pie, never being one to concern herself with slight chills, just shrugged off the breeze and continued in her usual bouncing, bubbly manner. She had just finished helping Applejack with a few chores on the farm. Even though she thought of the work somewhat boring, it didn't stop her from attempting, and ultimately succeeding, in making the most of the time with her hard-working friend, having turned it into a fun enough time that she would consider more apple bucking in her daily life. Her day was complete and she was content with the way things went.
Suddenly, she began to shake violently in all manners of places, a few she never even knew she had.
"Oh, what could this mean?" she said as a moderate expression of apathetic confusion rolled over her face.
She took a quick glance at her surroundings but figured it would just be best to move on, knowing her luck with these things, she wouldn't have been the target of her own foresight.
The colorful gingerbread layout of Sugarcube corner took her mind off of the shaking as she got herself ready for bed.
The bright light of a new day had shone upon the bedroom of one perpetually excited pony, who hopped out of bed just in time to avoid the alligator falling from her overhead light.
"Gummy, what are you doing up there silly?"
The alligator just simply tilted its head and stared at her.
"Yeah, I know what you mean." She had said while trotting out the door.
Pinkie hadn't necessarily come up with any plans for today, so she quickly made her own. Pinkie always had a number of random things around her room for such an occasion, so she took a look and immediately noticed her favorite. Taking the helicopter bicycle that she had lying around for her random desires, she sped up into the clouds.
"I can't believe I never found the time to do this." she said to herself in a slightly disappointed tone.
Almost immediately after finishing her thought, she began to flip a few switches and pedal vigorously. 'This'll surely look amazing!' she thought as the cloud began to fall into the blades of the bicycle. The cloud bits that fell in spun out like cotton candy, also taking the signature blue and pink coloring as the blades dyed them on the way out.
The clouds had begun to take the shapes of delicious sweets.
"Well I certainly feel like this calls for a celebration!" she cried out as the population of Ponyville began to acknowledge the work of the pink pony.
"Hey Pinkie! Wait up!" That was the first time Pinkie had ever heard those words come from that familiar voice.
Suddenly, as if from nowhere, a bright blue pony with a rainbow mane dashed through the scene, carrying behind her a few clouds that had not only been dragged along by the sheer speed of her flight, but also stained rainbow as they streaked along through Pinkie's cloud art.
Ponies up and down the streets could be heard cheering at the unexpected show in the sky, eventually calming down and carrying on with their usual day to day activities.
"Wow Rainbow Dash, that was amazing!"
"Hah, you call my little finishing touch amazing? Pinkie helloooo, you just colored the skies of ponyville, and without wings no less" Rainbow Dash's excitement was covered by a sound of almost familial pride. "But uh, why did you decide to do that..."
"I don't know... The idea just came to m-" Pinkie's voice had been cut off by the same violent shake as before.
This had sent her tumbling off her bicycle and plummeting straight for the ground.
This would have been bad had it not been for the fact that Rainbow was the best flyer that had been seen within a huge distance. Saving Pinkie was as easy of a task as it came.
"You ok there?"
"Yeah I'm fine, but there's that odd twitch-a-twitch again..."
"What did this one mean?" Rainbow's face began to grow worried. It was obvious to anypony who knew Pinkie that her twitches were never good, except tail flick to the left and eyebrow wiggle, Dash liked that one.
"I don't kn-" She had been interrupted by a large shattering noise, it was safe to assume that's what it was about.
"That sounded too loud to be a vase or a window, we should check it out"
Excited by the new twist on her day, Pinkie just agreed and followed Dash in the general direction of the notice, keeping an eye out for anything broken.
After walking for a few minutes, and finding nothing other than confused ponies, Dash finally had to stop and wonder what the heck could have caused the shatter if nothing broke...
"Yeah... Pinkie, I'mnot seeing anything, what about you?" Dash turned her head to see that Pinkie was gone, only to turn once more and find her in a flower pot looking
for the noise.
"Uh, right... Good luck with th-" Dash cut herself off at the light glowing from the inside of the Ponyville library. 'If the library glowed like that' Dash thought, 'then it's probably just a misfired spell'
"Hey Pinkie, come on, let's go see what Twilight is up to."
The pink pony simply fell from a roof "Alrighty Dash!"
Inside of the library, a violet pony and purple dragon just stared in awe at what the had before them. It was a crack, but not a simple crack in the walls, this crack simply floated in the air and shimmered.
The dragon spoke first, "What do you suppose it is Twilight?"
"I'm not entirely sure myself Spike." replied the Twilight, "I don't remember anything like this in anything I've ever read..."
Her voice trailed off in thought for a minor second before being interrupted by a knock on the door.
"Spike, if you would please?"
Spike agreed and walked to the door to greet the Pink and Blue ponies that had arrived.
Both stared in pure amazement at the right before them. It was literally a crack in air, or something if the sort, but it shimmered and glowed so beautifully.
"That's a neat-o trick Twilight! But what is it..."
"I don't even know Pinkie, it just appeared with a loud shattering noise when I tried to teleport myself to my room."
"So... You broke the air?" A slight skepticism radiated from Dash.
Unamused, Twilight simply looked over at Spike, who immediately took the hint and traveled a scroll followed by a quill.
"Dear Princess Celestia" Twilight began, "It has come to my attention that an
anomaly of magic, the likes of which I have yet to have seen before, has conjured itself out of a mishap of one of my spells. I can not give much explanation other than that as of yet. I will keep you informed on the current situation as I learn. Your faithful student, Twilight Sparkle."
The scroll then disappeared in a puff of green flame.
"For now, why don't we get the rest of the group here, I understand it's my fault and I'm probably the only one who can fix it after some studying, but I don't know... I just get the strangest feeling from this. I would feel much more comfortable knowing the rest of the elements of harmony are here just in case." Twilight had expressed some concern, but not much, it had an overlaying tone of reassurance to it that had kept anypony from worrying.
Rainbow Dash sped out the door of the library, leaving nothing but a small cloud of dust and a small rainbow trail. Anything less of Dash wouldnt have been normal.
Pinkie's attention finally snapped away from the beautiful colors of the crack in the air as another thought filled her mind, it was a similar sensation she had felt for the past few days. The sensation to do anything really, she just couldn't handle sitting around or wait for a reason to throw a party. The hyperactive pink mare would never admit to it, but she was starting to get bored of her normal ponyville routine. Her life was just too big of a rut, she needed a distraction but there was nothing to do in the library, no apples to buck, no clouds to shape, but at this point she would have been willing to try underwater bb stacking if it meant a change.
"Pinkie?" Twilight wasn't sure what to thinly at her friend's blank staring but took it
upon herself to ask anyway.
"Huh, what? Yes Twilight?"
"You ok over there?"
"Oh yeah, I'm fine Twilight. Why do you ask?"
It was useless to try lying if you were a citizen if ponyville, the town was just too friendly and honest to just stick with skeptical answers. Many Ponyville citizens also found that they were terrible liars when it came to personal issues.
"Pinkie, something doesn't look right, normally you don't just stare into space. I figured you would at least try to do something silly like watch me over my shoulder or play with Spike or something that even physics couldn't explain..."
Pinkie might have been an exception amongst the citizenry.
"Oh Twilight, Nothing's wrong you silly. I was just wondering why the crack sparked so pretty and then about what it tasted like, what it would feel like, how can I get more of these at my parties, what wou-"
"Alright, alright." Twilight's gaze went back to her books.
Pinkie's body began to twitch again.
"Uh Twilight?"Pinkie's voice shook due to the twitching.
Twilight didn't need a second reminder what that meant. Giving a scared look around the room and then finally to Pinkie. The question just came automatically, "What does this one mean?"
"I think I have an idea but-" Pinkie's voice got cut off over the sound of another large shatter.
Both ponies had the same expression of worry.
"Twilight? Is that supposes to happen?"
"Probably not." came the slightly sarcastic but curious voice from Twilight.
Just then, the door of the library bolted open as Rainbow Dash rushed in with a heroic "Are you three ok?"
Spike, had just simply went back to bed with so much passion for sleep that he didn't even stir at the loud ruckus coming from downstairs, Pinkie just simply have a happy nod, completely shedding any trace of concern, as was Pinkie's way. Twilight directed the group's attention to the gaping hole that replaced the crack. Twilight had felt a sort of energy coming from the hole. A sort of other worldly energy that was drawing the surrounding area in. She couldn't figure out what this hole had meant despite anything she had tried to skim through.
The library had soon been filled with the other three ponies Rainbow Dash was assigned to go get.
Applejack entered the library first
"Rainbow, ah understand that this is an important issue an' all, but please stick around the group long enough for us to ask single darn question." Applejack got herself in the library and finished her statement just in time for the hole to catch her attention. It had to be no bigger than the size of a filly, but it just floated there. Following after Applejack came the same confused expressions from Fluttershy and Rarity as they both stepped in the library.
Twilight addressed the crowd, "Sorry to get you all out of your houses so late, but I figured this would be something each of you should see." Twilight left out the part that they might need the elements of harmony that had been bestowed upon each of them in case anything goes wrong, which as luck would have it, would.
As if on cue, at the presence of all the elements together, the hole let out a moan that quickly got everypony's attention and sent poor Fluttershy hiding behind Rarity. The hole had seemed almost attracted to the power of the combined elements, grabbing and pulling air around it more and more violently. Pinkie, ever eager to see what the fuss was about bounced up to the hole to and stuck her head in to the swirling mass of colors, feeling little resistance, Pinkie just pulled out and gave a look of childish excitement.
"Girls, you have to try this! It's like a swirling bowl of candy and balloons and its all mixed together by sonic rainbooms! I can't really describe it!"
Slowly and carefully, each pony, except for Fluttershy, who was still hiding behind whatever she could find, approached the hole to examine it. Nobody decided to put their head in thankfully, but it was a terrible mistake and Twilight was the first to realize it, the growing intensity of the elements' power had caused the hole to viciously pull everything in. Pinkie, who was closest to the hole, flew in first and hit the sides of the hole, causing it break open even farther and increase the velocity at which the hole pulled things in. Applejack and Rarity had flown in through the hole next. Twilight could only hold on for so long but fell in too. Rainbow Dash kept the fight up but as her friends fell in, the force against her increased. Her wings began to burn as she attempted to flee, but failing to gain any ground.
"Fluttershy!" Rainbow pleaded, "Help!"
This had been a futile request as all it did was draw Fluttershy from her hiding place and cause her to smack into Rainbow as the hole sucked them both in.
With the power of the elements of harmony ceasing to exist in the plane that the hole appeared, the hole closed up, leaving nothing but strewn papers and overturned furniture.