Monday at school, Sidney was at her locker when Chloe walked up to her. She was frowning.

“What’s wrong?” Sidney asked

“I haven’t heard anything from Mia all weekend.” Chloe said “I just hope she’s all right.”

“I’m sure she’s fine. She probably just doesn’t have a cell phone.” Sidney shrugged

“But she should have gotten access to one again once she came back last night.” Chloe said “It’s just I… what’s wrong?”

Sidney pointed down the hall. Chloe looked and almost didn’t recognize who it was. Mia was in a wheelchair, her thumb in her mouth, her expression blank. She was wearing a plain t-shirt and sweatpants. They didn’t need to ask to know that she had a diaper on underneath.

“No way.” Chloe said “What could have happened to her!? She was fine just two days ago!”

“Maybe the other reality is a lot stronger in other places?” Sidney suggested

“Mia? Can you understand me?” Chloe asked

The woman smiled “Oh, do you know her? Say hi Mia!”

“Gaba goo!” Mia waved happily, taking her drool-soaked thumb out of her mouth for a moment. She showed no recognition of the others.

“Yeah, I, um, work with her sometimes.” Chloe said. She glanced at the bag on the woman’s shoulder. There was a baby bottle sticking out and some pacifiers too. It looked a lot like a diaper bag.

“You mean you babysit?” The woman asked jokingly “I think she’s a little too young to work.”

“I… exactly.” Chloe grinned weakly, having absolutely no idea which reality she was in. The woman turned to Sidney.

“Dearie, I think you need a diaper change. Why don’t you come with me?”

Sidney turned beet red. It was true she’d pooped her diaper in the other reality a few minutes ago but… how could the woman tell? She was wearing panties right now!

“Can you take your friend into class?” The woman asked, taking Sidney’s hand “I need to change her diaper.”

“Uh…”

“It’s all right.” Sidney said quickly “I actually do, um, need a change.”

Chloe glanced at Sidney’s butt as though she was expecting to see a diaper. Both girls blushed and Chloe nodded and took the stroller.

“All right.” She said, pushing Mia into the classroom.

“Now for you.” The woman turned to Sidney and took her to the downstairs bathroom. Sidney’s butt crinkled and puffed out.

Inside the classroom, Chloe wheeled Mia in between seats to her desk. No one acted as though it was strange.

“Okay, um…” Chloe looked at Mia, unsure what to do. Mia got up and stumbled into her desk happily. As soon as she sat down the desk warped and was suddenly a baby walker. Chloe blinked and then tried to ignore it, taking a seat at her desk. Mia turned her attention to another classmate, Aly, who was standing within arm’s reach.

“Aga boo!” Mia drooled. She grabbed Aly’s arm.

“That’s nice Mia.” Aly said, gently trying to get her to let go. Her outfit wrinkled and began to change color.

“Goo! Goo!” Mia insisted. Aly’s transformation sped up. Her butt puffed out as she went from underwear to diapers like Mia. She grabbed hold of a nearby desk as she went pigeon-toed, walking without support too much for her.

“Uuurgh!” Aly grunted, her knees bending. Chloe could see her exposed diaper push out a little.

“How are you today?” Another girl in the class, Carrie asked Aly as though the other girl wasn’t in the process of pooping her diaper.

“Ga boo pfft!” Aly said, touching Carrie and transforming her too. Ten seconds later Carrie lost her balance and fell on the floor, the only clothes she had on were a t-shirt and a thick, disposable diaper around her waist.

Chloe watched the alternate reality spread across the classroom towards her, one by one turning her classmates into diapered babies. Most of the desks disappeared under the students, leaving them crawling and crinkling on the floor in their new diapers. A couple turned into baby bouncers and walkers, ensnaring a gurgling, babyfied student. Chloe abandoned her desk as it twisted and turned into a baby swing.

“Ms. Holland?” Chloe asked, looking to their teacher.

“Umm…” Ms. Holland looked around the room blankly, unsure of what to do

Ms. Holland’s outfit changed into a t-shirt and overalls as she continued to look more and more confused. She stuck her thumb in her mouth and began sucking.

“Ms. Holland!” Chloe said, desperately looking for help as she hugged the wall, trying to avoid contact with the rapidly increasing number of babies.

“Sorry, I made pee-pee.” Ms. Holland said aloud to no one in particular.

“Pee-pee!?!” Chloe asked

Ms. Holland was a pretty young teacher, only one or two years out of college herself, but seeing her go back to pull-ups really shocked Chloe. If 25 meant wearing pull-ups, then what did 19 mean?

Mr. Tyler walked into the room holding a clipboard. He ruffled Ms. Holland’s hair.

“Thanks for looking after the babies while I was gone Franny.” He said

“Mmph…” Ms. Holland murmured

“Did you wet yourself again?”

Ms. Holland nodded.

“Okay, well there are no toilets nearby, so I’m going to change you into a diaper for now. If you need to go, you can just use your pants.”

Ms. Holland didn’t put up any resistance while Mr. Tyler pulled her overalls off and then her sagging pull-up. Chloe shielded her eyes, trying to give her teacher a little bit of decency while she was changed into a diaper, even though she was the only one in the room that cared.

Evan and Sidney arrived at Chloe’s house after school.

“Where’s Mia?” Evan asked

“My room.” Chloe said “But we need to walk through the alternate reality.”

“That’s fine.” Evan said “Lead the way”

Sidney watched her friends’ butts crinkle a little as they went to pull-ups while she had a full baby diaper wrap around her waist. Her stomach gurgled.

“Not again!” Sidney groaned, clutching her stomach. She had asked her mother to change her before coming here!

“Sidney are you…?”

“Yes!” Sidney said, squatting in the middle of the hall. Her diaper crinkled and pushed out a little.

“There’s no need to watch!” Sidney said to the other two, who quickly turned away to give Sidney some privacy while she pooped her diaper.

They entered Chloe’s room and returned to normal. Mia was sitting on the floor gurgling. Evan sniffed the air.

“I can still smell it.” Evan said, looking at Sidney’s butt as though she was still wearing a diaper

“I can’t.” Chloe said

“Neither can I.” Sidney said, though she didn’t mention that she couldn’t smell poopy diapers anymore.

“Can you just sit away from me?” Evan asked “Sorry, it’s just it’s really strong.”

“Yeah, sure.” Sidney said, going to join Chloe.

“So, Mia.” Chloe said. The three teens looked down at their babified friend. Mia sucked on a bottle softly.

“Do people think of her as special needs in this reality?” Evan asked

“Kind of.” Chloe said “I think they think of her more as a late bloomer.”

“Like… they think she’ll grow up eventually?”

“Right. Her Mom seems to be getting ready to potty train her.”

“So, she’s in the other reality. Permanently.” Sidney said

“That’s what it seems like.” Evan said

“And how do we explain that?” Chloe asked

Sidney thought about it “So up until now we’ve been assuming that this is isolated to around here right? That everywhere else in the world is normal?”

“Yeah?”

“What if it’s actually the opposite? What if here is where the effect is weakest?”

There was a long silence. Mia took her empty bottle out of her mouth, drool strands coming from her chin. She lay back and stuck her toes in her mouth and sucked on them instead.

“Is that possible?” Chloe asked “Astronomically I mean.”

Evan thought about it “About here is where the meteor would have hit directly. If it splintered… yeah, I guess it is.”

“So we’re completely surrounded by zones and the ones in town are getting bigger.” Sidney said “Which means…”

“Don’t think like that.” Chloe said quickly

“What? It’s true!”

“We’re not talking about this now.” Evan said “Chloe, you said there was something else you were worried about?”

“Huh? Oh, right. It’s just, it seemed like Mia was changing things. Like, she’d stare at someone long enough and they’d become a baby.”

“Did she do that to you?”

“No, it didn’t seem to work on me. Touch did though.”

“Huh.” Evan scratched his head “So let’s weigh our options here…”

They talked for a while but ultimately didn’t get anywhere. All three of them knew that there wasn’t anything they could do, but they didn’t want to admit that. Sidney waved goodbye to the other two and started walking home. She couldn’t get the idea that Mia had actually had control over the two realities out of her head. What if she could make herself a baby so she didn’t have to take a test or something? At least that’s why she told herself she was interested.

“Staring at things, huh?” Sidney wondered to herself. She looked across the street. There was a girl, maybe in her early teens, walking with a backpack on. Sidney looked at her and tried to imagine a diaper popping out from under her skirt. Nothing happened.

“Oh well.” Sidney muttered to herself “Girl belongs in diapers at least.”

The girl stopped and looked around, confused. Sidney raised an eyebrow.

“What’s she doing?” She wondered out loud

The girl squatted. Sidney got a view of her panties. Except they weren’t panties, the girl had a thick diaper wrapped around her waist!

“Did I…?” Sidney asked, watching as the girl took off her backpack and set it beside her. A pacifier had appeared in her mouth and her entire outfit was much more infantile. She wrapped her hands around her legs and really strained. Sidney could see her diaper push out a little. A woman who hadn’t been there a couple minutes before came up from behind the girl.

“Elena, did you have an accident?” The woman asked. Elena nodded. The woman lifted up Elena’s skirt and pulled back her diaper.

“Phew, you really needed to go, didn’t you?”

Elena stood up and sucked on her pacifier absentmindedly, like diapers were a normal part of life. The woman picked up the backpack.

“Thanks for holding your diaper bag Elena.” The woman said “Now let’s get you changed.”

Elena lay back on the grass and let the woman undo the tapes of her diaper on the edge of the sidewalk. Sidney didn’t stay and wait to watch the diaper change happen, she walked quickly away, pretending like she hadn’t done anything.

The next day Sidney barely got through five minutes of Mr. Tyler’s class before she had a messy accident. She sighed and looked from herself over to Chloe, who was sitting on the training potty with her pull-up around her ankles. Sidney scowled. Chloe was always better than her! Well, not this time! Chloe wasn’t using a potty, she was having an accident in her diaper like a big baby!

Chloe grunted, trying to poop. Doing it in front of everyone hadn’t gotten any easier. It was a few seconds before her training potty changed enough for her to notice.

“Huh?” Chloe asked, feeling herself sink a little so her mess was touching her bottom. Chloe stood up in panic. The training potty stuck to her butt, taped between her legs, more soft padding than hard plastic.

“N-no! I made it to the potty!” Chloe said, swinging her butt from side to side as though trying to shake it off. Sidney grinned, really focusing on Chloe’s butt, giving her a baby diaper with multiple tapes on each side. Chloe stumbled and fell, her diaper too thick for her to walk properly. She grimaced as she kept going potty, unable to stop, forced to mess her diaper like a real baby.

Sidney looked around the classroom, doing the same to the rest of her classmates. Most of them gave no indication of their thickening diapers, though a few stumbled and fell on their heavily padded rears like Chloe had. Sidney grinned. Perfect! Now no one could make fun of her for wearing diapers because they all wore diapers too!

The icing on the cake was Mr. Tyler walking over to Chloe and pulling back the waistband of her diaper.

“Oh, looks like you went poo-poo.” He commented

“I-I went in the potty…” Chloe said

“Nope, sorry but you went in your diaper. That’s all right though, let’s get you changed.”

Chloe was bright red while she got her messy butt wiped in the middle of the room. It didn’t matter that no one else cared, she wasn’t supposed to need diaper changes like some overgrown baby! She whimpered and stuck her thumb in her mouth. It was instinctive for her, it didn’t even occur to her how infantile she seemed.

“There, there.” Mr. Tyler said, patting Chloe on the head “Doesn’t it feel so much better to be out of that icky, poopy diaper?”

Chloe nodded and sucked her thumb.