Princess Luna aimlessly wandered through the dreams of Equestria feeling bored. Nothing seemed to be happening tonight. No nightmares, no restless sleepers, no fillies who were having problems in the waking that she could help solve.
Absolutely nothing.
If anything, it was a testament that she was doing her job right. Sleep was a welcomed friend to all in Equestria, even her now that the Tantabus had faded from existence. But at the same time, it left her with a rather empty feeling. Helping others dream was such a fufilling job to do, but now that it was done for the time being it left her with a rather empty feeling. So she wandered.
And wandered.
And wandered.
And sighed. "There must be somepony who's dreams I can assist with. Even if- Huh?" She paused, feeling a nagging tug in the back of her mind.
It wasn't anything substantial, or at least, it didn't start out as anything substantial, but she did know what it meant. Somepony was dreaming about her, specifically.
It was a bad habit her subconscious had picked up in all her years of dream walking. As she subtlety scanned every dream in the world, any mention of herself was picked up and recorded, and the dreams where she played a bigger, more important role were often brought to her attention with a gentle nudge from her subconscious.
Normally, she would ignore them, considering she had far more important dreams to deal with than ones that just involved her, but tonight was an exception. With staggeringly little to do, Luna didn't even need time to mull the decision over in her head. She was going to check it out.
She followed the tug through the dream world like directions to escape a maze. It increased in intensity the closer she got, pulling at her harder and harder as she sifted through the subconsciouses of thousands of ponies. Eventually, she found the pony who was dreaming so intently about her, and it was somepony familiar to boot.
"Fluttershy," Luna pondered to herself as she found the newly begun dream. "Why would she be dreaming about me?" The tug on her mind turned into an outright pull. It was actually becoming a strain not to enter the dream.
"I suppose there is only one way to find out what this is all about," Luna muttered. She stopped resisting the pull and went with it, letting Fluttershy's dream wash over her as she plunged into it. A tingling sensation spread over mind, accompanied by a feeling that was... oddly warm-like. Then everything was black.
Luna opened her eyes. Well, they weren't really her eyes, they were just a fabrication for the purpose of the dream, much like the rest of her body, but nevertheless she opened them.
The first thing that struck her was how foalish everything was. It looked like she was in an oversized nursery. The walls were striped pink and white, and adorned with hearts and flowers and other childish designs. In the corner to her left there was a purple crib and mobile that looked big enough to hold even Celestia, with a changing table right next to it. Off to the side the pink carpet of the room morphed into tiling, as a fridge, sink, and high chair were visible. Lining the floor were childish toys like rattles, blocks, stuffed animals, and more, all culminating in a play pen in the middle of the room.
What is all this doing here? In Fluttershy's dream? Luna looked around, and caught they very yellow pegasus she had been thinking about walking towards her, a motherly smile on her face.
"Hello there, sweetie," Fluttershy cooed. "Did some filly manage to get her diaper off?"
Ah, now it makes sense. Luna had been through countless dreams in her day, and knew a fantasy when she saw one. Though, she had stumbled across many weirder things than a lonely mare with an adult foal fetish.
Not even wanting to contemplate why Fluttershy had been dreaming about her during all of this, Luna decided it would be best to leave. She tried to call upon her magic, but strangely, nothing happened.
"Huh?" Luna blinked, and tried her horn again. Nothing. Not even a fizzle. A little worried, she tried her wings. They flapped in response, but failed to lift her off the ground.
Oh no. Luna realized. She'd been too careless when she'd gone into Fluttershy's dream. Her mind had put up no safeguards, so when she'd entered, Fluttershy's subconscious had likely taken the foreign entity and integrated into the dream. As such, she had no control. She was at the mercy of the dreamer and whatever dream she happened the be in.
"Well," Fluttershy hoisted Luna up into the air. "I don't see where you put it, so I guess we'll have to get you a new one." Her wings flapped, lifting them both off the ground and over to the changing table.
Luna's eyes widened and she squirmed. I need to get her to wake up, otherwise...
"Fluttershy! It's me! It's Luna!"
Fluttershy giggled as she set Luna down on the cold, plastic changing table. "That's right, honey, you are Lulu! But you know you can call me 'Mommy'."
Luna grunted in protest and tried to wiggle off the changing table. Unfortunately, the task proved impossible. Whatever Fluttershy's subconscious had done to her, it had likely reduced her strength to that of a foal's. She was helpless.
Luna flailed her limbs around in protest. "Fluttershy I-Hmmph!" She was promptly cut off as a cream-colored pacifier was shoved into her mouth.
"Don't worry, sweetie. I know you're cranky, but this will help." Fluttershy smiled as she retracted her hoof.
Luna whined in protest and tried to spit out the pacifier. Then she tried to spit it out again. It was stuck.
Fear crept into her. Right, this is Fluttershy's dream. If she doesn't want the pacifier to come out, then it won't come out. This was bad. Her only way to communicate right now was with her words, but without them she might as well be a foal. She whined into the pacifier. "Fwu'ershy, pwease!"
Fluttershy merely smiled and stroked Luna's mane lovingly. "There there, sweetie. It's okay; just suckle on your paci and you'll feel better."
Luna harrumphed as best she could, but saw that this was a fight she couldn't win. Either she angered Fluttershy's subconscious (which given the state of things would be a terrible idea) or she played along until she was given an opportunity to speak again. Reluctantly, she gave the pacifier a suckle. It was... oddly relaxing, so she did it again. Pretty soon the pacifier was bobbing up and down in her lips, and Fluttershy smiled.
"Good girl, Lulu. I bet you're pretty hungry, huh?" She tickled Luna's tummy, forcing a giggle from the alicorn. "Is my little filly hungry?" Her hoof kept digging into Luna's sides, making her all out laugh. Mercifully, Fluttershy withdrew. "Well then, let's get you into a diaper and then I'll make you a fresh baba. Does that sound good?"
Luna was still in such a laughing stupor that she barely heard, and just nodded along to keep up appearances.
Fluttershy hummed to herself as she reached into a nearby draw. What she pulled out made Luna's eyes widened.
It was by far the biggest diaper that the Princess of the Night had ever seen. It was massive. Big enough to encase a small animal, and poofy too. Fluttershy raised Luna's legs into the air and set the cloud of a diaper below them. Then she slowly lowered Luna's legs, spreading them apart as she did.
Luna felt so exposed and vulnerable as her butt landed on the soft, cushy surface with a crinkle. She blushed.
Flutttershy then took out some foal powder and doused Luna's nether regions. She proceeded to pull Luna's tail through the hole in the back, and then folded the rest over her waist. She sealed it with tape, and Luna saw the pink butterflies design on the crotch.
She squirmed as the final tape was sealed and tried to bring her legs together, but found that the diaper was so thick that it managed to keep them apart. Not to mention diaper was just so poofy that it was comfortable, and it had no right to be! The way the plush fabric pushed against her marehood certainly didn't help. Being forced to momentarily partake in this little fetish she could handle, but she was not going to enjoy it.
Still suckling, Luna mustered all the strength she could in her forelegs and moved them over to the diaper. She decided she had to get the ~~comfy~~ annoying garment off as soon as possible.
Unfortunately, Fluttershy had other plans.
"So that's how you got out before," she said, pushing Luna's hooves away from the tape that kept her trapped in her ~~adorable~~ childish prison.
"Mmpfh!" Luna whined into her pacifier. Wait, her pacifier? No, no, no, it was not hers. It would never be hers. And neither was this diaper for that matter! "Fwu'ershy, wet me ouwt! I a pwinceth!"
Fluttershy giggled as she dug around in the draw some more. "That's right, little Lulu, you are my princess." She produced four cream colored booties. "But you still need diapers, sweetie, and these'll make sure you won't take them off."
Luna tried to glare angrily, but while she was sitting in a diaper and involuntarily suckling on a pacifier it came off as pouty more than anything.
"Oh don't be like that, Lulu. You'll love these! Mommy promises." Fluttershy slid the first bootie over Luna's front hoof. It was also really poofy, and Luna knew that if all four made it on her, she'd never be able to get ~~her~~ the diaper off.
But all four did make it on, despite her struggling. Fluttershy then proceeded to lift her up. "You sure are cranky today, Lulu. I better make you that milk now. Here, play with your toys until it's ready."
Fluttershy gingerly set Luna down in the playpen, her bottom sinking into her cushy diaper as she did.
"I'll be right back."
As Fluttershy left, Luna whimpered and look around her new confinements. There were toys to play with, but none looked appealing. Just dolls, lettered blocks, a rattle...
Wait, lettered blocks? Perhaps I can write Fluttershy a message with them!
Luna grabbed for the wooden toys and set to work. Even with her foalish limbs not responding well, she still managed to finish in time. She scooted back to admire her handiwork.
FLUTTERSHY I AM NOT A FOAL!
It wasn't a very complex message, but she had very little blocks to work with. She just hoped it would be enough to jar Fluttershy's subconscious into accepting that she wasn't a child.
When Fluttershy did come back, she was barely even looking at anything besides Luna. "Who's ready for their baba?" Fluttershy asked, grabbing Luna to hoist her up.
Luna shook her head. "No, wook at da bwocks!" She pointed, but as Fluttershy lifted her up a wayward leg knocked a few letters out of place. When Fluttershy did look over, what she saw was:
FLUTTERSHY I AM A FOAL!
"Aww, that's adorable." Fluttershy rubbed her nose against Luna's. "Such a smart little filly."
Luna just sighed into her pacifier. Great, as if her mind need any reinforcement.
She was swiftly carried to the high chair and sat down. However, because to the sheer size of her diaper, it was quite a squeeze getting her in. Once Fluttershy finally did, she clicked the built-in table into place, effectively trapping Luna's forelegs. She kicked, her bottom legs still spread out and useless.
Fluttershy held up a bottle of what could only be formula, and Luna moaned internally. "Okay, sweetie, Mommy's going to take your paci out so you can drink."
Luna almost rolled her eyes, but it was then she realized that she'd been actively suckling on the pacifier this whole time. The knowledge of this made her groan as the pacifier was removed.
"I know you're hungry," Fluttershy said in response. "Here you go."
The amber nipple of the baby bottle was shoved in place of the pacifier, and Luna realized she lost the opportunity to talk. She whined into the bottle, refusing to suckle.
"Oh come on now, I know you're hungry." Fluttershy said. "And I'm not removing this bottle until you've had your fill."
Luna realized her only chance to talk now would be after she finished the foalish liquid resting in her mouth. She sighed, but suckled.
Nothing.
Luna frowned at the lack of any milk and suckled again. This time, a steady stream opened. The sweet, creamy liquid flowed into her mouth and Luna actually smiled in delight. It was tasty!
She suckled contently for a few minutes, finding the whole process relaxing as her tummy filled with milk. Her eyelids half-lowered for a moment, and she let her guard down.
And then she needed to pee.
Luna didn't realize it at first, but Fluttershy's subconscious was slowing filling her bladder up. It wasn't until she was halfway done with the milk that she felt the first trickle of urine escape her bladder. Luna's eyes shot opened and she whined, but found it difficult to stop suckling. Or peeing for that matter.
The dam had broken and now her diaper was being filled with copious amounts of her own urine. Luna tried to shuffle about to let Fluttershy know this but found moving very difficult in the high chair. Fluttershy was no help, simply stroking her mane as she tipped the bottle back, cooing softly into Luna's ear.
At least the diaper was absorbent, catching all of the fluid she expelled and soaking it up. Although, now her diaper was unnervingly squishy, and each squirm only made that problem worse.
Luna finally stopped peeing just as the milk was finished. The shock that she had had an accident (even if it was induced by Fluttershy's subconscious) was so great that she couldn't find any words. She just let the rubber nipple exit her mouth and be replaced by the pacifier. No complaints, no explaining to Fluttershy the situation, just suckling.
"Looks like somepony is awfully tired," Fluttershy said as she unstrapped Luna from her highchair. "It is getting pretty late. Would you like a nap?"
Luna finally snapped out of her shock. A nap? That would be perfect! If both she and Fluttershy fell asleep in a dream, they would wake up in reality. She would be able to escape! She nodded fervently at the suggestion.
Fluttershy giggled. "Okay then. Oh, but first." She took her hoof and pressed it against the diaper, checking it. Unfortunately for Luna, the thickness of the diaper didn't let any liquid escape to the surface, so as Fluttershy pressed a squishy mess against her unsuspecting crotch, she found only dryness. "Looks like you're all good!"
Luna blushed, but barely had time to process it before she was whisked over to the crib. Fluttershy set her down, and draped a thin blanket over her body.
"Good night, my little lulu." Fluttershy kissed her on the fore head and then left. A moment later, the lights flickered off and a door shut.
Luna squirmed about, unable to get comfortable with the squishiness in her diaper. It wasn't uncomfortable, but it did... give her other ideas.
But I'm not going to do them. I've peed in my diaper that that's it. No more!
And that's when it really hit her. She'd peed in a diaper. Her diaper. Here she was, alicorn Princess of the Night, subdued into a foal in a dream, stuck in a wet diaper, in a crib, unable to stop suckling on a pacifier. Luna sniffled as the humiliation of the whole ordeal really hit her. She was just glad nopony had seen. Well, one pony had, but she was convinced that it was just a dream.
That was the mentality Luna kept. It was just a dream. She hadn't really peed herself. She wasn't really in a crib and Fluttershy hadn't just turned her into a foal.
It was just a dream...
It was just a dream...
It was just a dream...
Luna opened her eyes. She was in her room. Actually her room, back in Canterlot. She breathed a sigh of relief, and then one of happiness when she realized there wasn't a pacifier in her mouth.
It was finally over. Sure, she probably wouldn't be able to make eye contact with Fluttershy for a few weeks... or months... but it was finally, unequivocally, over.
Luna sat up to roll out of her bed when she felt something cold and damp. She froze.
Barely daring to peek under the covers, she winced as her fears were confimed. Apparently Fluttershy's subconscious had held more sway over hers than she realized; she had wet her bed during the night.
She bit her lip. Hopefully the cleaning staff would by that she'd just sweat a lot last night, or something along those lines. That wasn't her biggest concern. Her biggest concern was how helpless she felt right now... and how much she actually kind of liked it.
"Nope!" She declared, interrupting her thoughts. "I am not going to think about that. And I am never going back to one of Fluttershy's dreams ever again."
...Probably.
