Author's Note: I can't indicate that this takes place in both series, but just so you know, it does. It switches back and forth. Knowledge of the 1987 series would be helpful for a full appreciation of this fic.

One more thing: spoilers for the season finale. This takes place in canon-verse.

Webbigail Vanderquack knew better than to go poking around in Uncle Scrooge's belongings. She knew better, but the triplets had dared her and gotten her blood up. She'd just gone into one of his private rooms for a quick peek, nothing more, she told herself. After all, she didn't want to get in trouble. She was only doing this to show the boys she could be just as brave as they were. Hugging her dolly to her chest, she walked up to a mirror, which wasn't showing her reflection, but other people, people she recognized yet looked completely different.

For one thing, the triplets were all dressed differently. Louie had on a hoodie, Huey's look was the closest to the one she knew, but his voice was off, and Dewey had only the blue shirt, no hat. Their voices, come to think of it, sounded dissimilar, like three separate people rather than one person split three ways. Curious, Webby poked the mirror and the surface shimmered. Startled, she stepped back.

"Hey, Webby, what's this?" one of the triplets called and Webby looked around. But no one around her had called her name. A figure stepped forward wearing a pink bow, a purple shirt, and a pink skirt. Webby froze; the girl before her looked confident and moved her body like she could use it as a weapon. Drawn forward again, she crept until her beak pressed against the glass, which shimmered again. This time, Webby didn't retreat.

"Oh, that's actually a portal to another dimension," the girl said in an offhand tone. "It's not normally active, though. Huh."

She took another step forward and their eyes met. Webby yelped, thinking she ought to flee and tell the boys that she'd fulfilled their dare. Yet her feet remained glued to the floor. She ought to look away, too, but couldn't bring herself to do that either.

"Hi! I'm Webby!" the girl announced brightly from the other side of the mirror. "Don't be afraid-I don't bite."

"She does get really excited, though," one of the boys warned.

"Can you go through this thing?" another boy asked, the one who looked like Dewey.

"I don't know…" the girl who shared her name mused. "I've never tried."

Cautious and curiosity again getting the better of her, though she knew she ought to turn tail and run, perhaps seeking out Uncle Scrooge, she ventured her arm through the mirror. It passed through like she was waving through water and she exclaimed. Before she had a chance to snatch it back, the other four grabbed onto it and pulled her through.

"Oh!" she exclaimed, feeling awkward with her back against the mirror. The glass was cool behind her but showed no inclination toward returning to a portal. Webby's heart raced. The other four were giving her equally inquisitive glances, but nothing condemning. Just quizzical, like they didn't know what to make of her.

She felt the same way.

"Huey, Dewey, and Louie?" she asked in a tremulous voice.

They gawked at her and she huffed, stomping her foot. "It's not nice to stare!"

Never mind that she was staring too.

"Hey, I've seen that doll before," Dewey commented. "Isn't that the same doll you have pinned to your board?"

"Yeah, I outgrew that years ago," the girl said in an offhand tone, sounding embarrassed. "I'm way too old to play with dolls."

"She's acting like she knows us," Huey said with a frown. "If this is a portal to another dimension, then we must exist in that other dimension too. And...she must be your counterpart. Webby, meet Webby."

"She's kinda girly…" Louie commented with a frown. "You two don't look much alike. Or act much like, come to think of it."

"How do you know we don't act alike if you don't know me at all?" Webby countered. She glowered at the boys and folded her arms across her chest. What she wanted was to return to her own world, but the mirror wasn't obliging her. She wasn't sure why, either. Twisting, she regarded the mirror, which was only showing a reflection of the room around her and the five of them, not the darkened vault she'd been in before.

"We need to call her something," Dewey said. "Something to distinguish the two of you. How about you can be Webby number 1 and this one will be Webby number two?"

The other Webby moved forward and pressed her palm against the glass. She frowned thoughtfully. "It looks like this mirror is only one way right now. I remember reading somewhere that it works once a day. I guess you're stuck here until then, other me."

"You mean I won't be able to get home?" Webby squeaked, dismayed. "But...what will I tell my granny? And Uncle Scrooge? Oh, the boys are gonna get it. And me too, because I wasn't supposed to be in here."

"We'll explain it to them tomorrow," Louie said, looking uncertain. His brothers nodded, though they too shared dubious looks.

"What am I going to do?" Webby moaned.

"Since you're here, you might as well take a look around," the other Webby suggested with a wide smile. "I mean, you wouldn't want to stay here cooped up in that room until the mirror works again, would you? We can show you around-although I guess if your granny is the housekeeper there too, you don't really need a tour-and you can hang out with us."

She gestured for Webby to follow and the younger duckling cast one last miserable glance back at the mirror before trailing after them. As she did, she overheard Dewey said, "Man, she doesn't really act like our Webby, does she?"

"Different upbringings," the other Webby said confidently. "Nature versus nurture or a combination of the two. But that doesn't mean that she can't do things that I can do or vice versa. Maybe she's just shy."

"I have a hard time imagining you being shy," Dewey said dryly.

"Like I said, she must've been brought up differently," the other girl mused. She frowned, contemplative. "She looks younger than us, too."

"How can she be?" Huey said, though he too appeared thoughtful. "Unless time flows differently in that universe than it does here."

"It's possible…" the other girl said.

"Are we even sure that's Webby?" Louie scoffed. "She hasn't said her name."

"I am Webby," the pink dressed girl protested, adamant. "You're just as mean here as you are at home!"

"What are you talking about?" Louie said, likewise appearing offended. His beak wrinkled in distaste. "All I did was mention that you didn't say your name. All you've done since you've gotten here is complain that you need to go home."

"Dude, she got here five minutes ago," Huey reminded him. "She's probably still in shock."

"I am not in shock! You take that back!" Webby sniffed.

The three boys turned as one to look at the other Webby, the older one, who still maintained an air of composure and self-confidence. Was it something that came with age? One of the boys had mentioned that Webby had had her old pink doll and then stopped carrying it around. Then again, the other Webby had also mentioned nature versus nurture.

"Well…" the other Webby demurred, shrugging. "We might as well take her to Uncle Scrooge and see what he has to say."

"Other than 'you cannae keep running around in my bin'," Louie imitated. "Man, we'd never get to do anything fun if we listened to him."

"Except go on adventures," Dewey reminded him.

"We haven't done anything lately," Louie groused. He looked over at her again and she felt small, inferior. She'd always felt inferior to the boys, though. They always acted so much older and more mature, like she couldn't possibly compete.

"I'd like to go on an adventure," Webby ventured.

"Why can't you?" the other Webby said, as if this was the most natural thing in the world. "I go with Scrooge and the others all the time. Sometimes Granny even tags along."

"Oh, my granny would never let me adventure," Webby pouted. "And the boys say I'm too little to go with them."

They walked out of the room and right into a mirror image of Uncle Scrooge. Well, maybe a mirror with flipped colors. This Scrooge wore red instead of blue, but other than that, he resembled hers. Webby found herself relaxing. Scrooge would never let anything bad happen to her.

"What's this?" he asked and then frowned at them. "I thought I told you not to go mucking about in my storage bins?"

"We were curious...and it is raining outside...and, well, the mirror just kinda popped out at us, and, well, look," the other Webby said and the boys pushed Webby forward. Webby huffed, trying her best to look and feel older than she was. It was unsuccessful and she hugged her doll tighter.

"She says her name's also Webby," Huey supplied.

"But she's just a wee lass!" Scrooge objected.

"I am Webby," she protested, lower beak quivering. "I don't know what I'm doing here. The boys dared me to go in because they said I'm always such a baby so I went in to prove them wrong and then I got pulled through."

"Oh, aye, that mirror," Scrooge said and the other Webby toed the floor with a sheepish smile.

"What other boys?" Scrooge asked her gently.

"The other versions of Huey, Dewey, and Louie. The big meanies," Webby clarified. "They never let me play with them, they always make fun of me, and they always go off on adventures without me. It's not fair."

"I literally see no resemblance between this Webby and you," Louie said in an aside to the older girl. "And don't tell me 'nature versus nurture'. You're the cooler Webby. By far."

The other girl blushed and toed the floor shyly. Webby noticed as she did that her shadow didn't quite move with her. For a split second, it looked like it belonged to someone else, someone taller with a streak through her hair. Confused, she stared a moment longer, but Webby's shadow returned to normal.

"So I suppose you're stuck here until the next time the mirror opens up," Scrooge said and suppressed a sigh. "Better make yourself at home here, lass. And you four-no more rummaging through my archives!"

"Yes, Uncle Scrooge," the four of them chorused. Scrooge knelt down beside Webby and tousled her hair. Webby beamed at him.

"Mind you be careful with them," he said. He smiled, though, as he said it as if he thought her made of sterner stuff. "They can play a bit rough."

"Us?" Dewey objected. "Webby tracked us down with a dart gun and hunted us like animals."

"You weren't getting into it," Webby said, shrugging. "You didn't even give your characters backstories."

Scrooge rolled his eyes and stood up. "I've got a few accounts I need to look in on, so I'll be back later. Behave, you four."

"Behave, he says," Louie mimicked as soon as Scrooge was out of earshot. "I'm not the one who was wearing my arch enemy around my neck for fifteen years. He even kissed that dime."

"Ew," his brothers said and the other Webby grimaced.

"Let's just say that the McDuck family and the de Spell have an interesting history," she said. "And leave it at that."

Her shadow bristled, which was weird because since when did shadows tense? Webby poked at it with her foot.

"Your shadow doesn't seem to belong to you," Webby said, frowning.

"What?" the other Webby said, confused and dismayed. She twisted around to examine it herself. "Looks normal to me."

"Maybe I was seeing things," Webby allowed, though she didn't think she was. Something odd was going on here.

"C'mon, I'll show you the rest of the manor," the other Webby volunteered, uneasy. She held her hand out for the younger girl to take and she did, though she kept a close eye on her shadow too, in case it was contagious.