As Celestia's bright warm sun cheerfully shone down on the peaceful hamlet of Ponyville, so too did a bright warm smile cheerfully shine forth from the face of Ponyville's most eccentric resident.

Pinkie Pie, of course. While most ponies that strolled the quiet streets of the town wore a smile these days--an occurence mainly due to Pinkie's influence--Pinkie herself wore the godfather of all smiles. The judge, jury, and executioner of smiles. The smile that could cause a grown mare to break down entirely into desperate hysterical laughter as they fully realized the extent of infinite possibilities that smile portended.

One cannot grasp the width of the universe, and just so one cannot grasp the width of that smile.

What Pinkie's smile meant today, however, was a little less existential. Pinkie had extensive files on everyone in Ponyville, and someone was having a party today...even if they didn't know about it yet. She was going to get that someone a party if it was the last thing she did. It was her duty, her mission, her destiny.

"Hey Pinkie!" said Rainbow Dash, descending from the sky. "Have you seen Twilight anywhere?"

Pinkie nodded. "Of course I have!"

"Oh, phew!" said Rainbow Dash, visibly relieved. "Where is she?"

"Well of course I haven't seen her right now, silly! I have no idea!"

Rainbow Dash flew off in desperation, leaving Pinkie to her hopping along. If she was to throw the Eiffel Tower of celebrations, she had some last minute shopping to do.

But nopony was out today...that was strange. Normally the marketplace was really busy this time of day. Something was going on...

Pinkie shrugged it off. There were bigger things on her mind. She had to have complete focus if she was to throw the Fallingwater of birthday feasts.

Just a stop by the party supplies store for a noisemaker, three toothpicks, a rubber band, five jingle bells and an entirely unwholesome amount of colored streamers, and she'd be ready.

Would the counter be staffed? Nopony seemed around to do it...

Some time, but not an inordinately large amount, later,

Pinkie's shopping paid off, at least in the sense that she had to drop her pay off at the counter, as nopony was there after all. No worries however, she left money so it wasn't like she was stealing, that would be unacceptable.

Now with mane full to the reality-distorting brim with party supplies, Pinkie was finally ready to enter Discord's Dimension^tm.

Here Pinkie ran into a predicament. To get into Discord's Dimension^tm, she had to do something inexplicably nonsensical. However, Pinkie already was inexplicable nonsensical. Probability had made a special exception in her case years ago and allowed her continued existence in the waking world.

So she couldn't just settle for inexplicably nonsensical.

She had to resort to complete and entire befuddling capricious misconduct.

Pinkie sighed, pulling a cupcake out of her mane, cradling it on her hoof the same way Hamlet held the skull of Yodrick. To break the laws of probability, she knew what she had to do.

"Cross my heart and hope to fly," she recited slowly and gravely, "Stick a cupcake in my eye."

The world around her seemed to get a little darker, her words echoing through the trees like the sudden wind that picked up.

She closed her eyes, steeling herself for the inevitable. It was a terrible act, but a necessary evil. Discord would never have his party if she couldn't force herself to do the one thing she would never do.

She had to break the Pinkie Promise.

Lifting the cupcake in her hand, she opened her eyes and drove the fated pastry home.

The pain faded away almost immediately, the telltale tug of teleportation pulling at her but leaving the cupcake behind.

It worked!

Just before that moment,

Discord was having a lovely day. Everypony in Ponyville was afraid of something, and it wasn't him!

Of course, he had no idea what exactly it was, as nopony stopped running to speak or even yell over their shoulder. Rainbow Dash had stopped by but even she only asked where Twilight might be, something that Discord neither knew nor cared about.

If only he could tell what was happening! Discord, the lord of chaos, the puppetmaster of pandemonium, not only not in charge of the chaos, but at a loss to what caused it? That simply could not stand.

He picked up the nearest pony he found and questioned it: "What in Equestria is going on?"

The pony, unable to decide whether Discord was the lesser of two evils, eventually caved in and said shakily, "T-there's a monster headed our way! I've never s-seen anything like it!"

Discord dropped the pony and stroked his goatee in thought. "A monster, you say?"

Cries of "Where's Princess Twilight!" and "Somepony find her! She's the only one who can get rid of it!" rang out from various corners of Ponyville.

A perfect opportunity presented itself to the draconequus. Since Twilight was nowhere to be found, he could be the one to save the townsfolk! He would be revered again, and perhaps he might be able to get away with creating a "chaos garden" somewhere as a thank-you...

His mind made up, he snapped his fingers and popped over to where the monster would be. "I've heard something about a monster here," he spoke theatrically, "and it is my intent to rid Ponyville of it once and for all!"

Screams rang out behind him. The world seemed to get darker, and the wind picked up.

He turned raising his now boxing gloved arms, "Well now, monster, put up your dukes, will you..." and stopped short.

There in front of him was a colossal eye, smaller eyes on stalks like crabs radiating out from its center.

"Don't fight it!" yelled a fleeing pony. "It's a Mag-Eye, it'll stop your magic!"

"Is that the name you have for it these days?" Discord mumbled shakily. Oh, he knew what it was. Legends from even back in his time told of these evil eyes, and in recent years they had become popular in the fantasy fiction realm, especially in that one game he liked to play with Spike and Big Macintosh.

And he knew that even he was no match for the powerful anti-magic gaze it was nearly directing at him.

Discord, at that moment, realized he was a coward. He regretfully accepted this, snapped his fingers, and teleported back to his home dimension.