I do not own Phineas and Ferb. May and Misty are mine.

Edit: June 2015. So I wrote this whole story before the episode where Monogram's son is introduced. Minor edits were made to make reference to the fact that yes, the girls have a brother.

The New Girls

Phineas Flynn peered curiously over the wooden fence and stared across the street. "It looks like Isabella is getting some new neighbours."

The large moving truck stationed outside the house next to the Mexican-Jewish girl's was the source of the redhead's curiosity. Many movers were lugging cardboard boxes from the trailer and stocking them on the bright green lawn. The front door was wide open and occasionally someone would drift in and out.

"I wonder if they have any kids our age," he mused.

Just as the words left his mouth, a girl around ten-years-old skipped from the house and stood on the lawn, her brow furrowed as she scanned the many boxes piled together. Her shoulder-length snow-white hair swayed as she swung her head from side to side, blue eyes narrowed as she searched for something. A small pink bow was tied above her left ear and she wore black boots, black jeans and a white T-shirt with lavender sleeves.

"Gee, I guess that answers that!" Phineas said cheerfully. "We should introduce ourselves! It must be hard moving to a new place."

Ferb simply nodded. Before the two boys could leave the yard their mother poked her head out the sliding glass door. "Where are you boys going?"

Phineas pointed across the street. "We were going to greet our new neighbours."

Linda smiled. "How nice! Hold on a second, I just baked some cookies."

Phineas and Ferb followed their mother inside and sat down at the kitchen table. "Hello Perry," the redhead greeted as he pet the platypus. Perry gave his signature purr and curled up for a little nap.

"What are you guys up to?" Candace asked suspiciously as she entered the kitchen. Normally her little brothers were already hard at work making some contraption and she would be trying to bust them, only to ultimately fail.

"We were going to introduce ourselves to our new neighbours," Phineas explained. "Why don't you come?"

Candace opened her mouth to make a sarcastic response but Linda spoke first. "That's a great idea! Who knows Candace, they might even have a girl your age."

The teen clamped her mouth shut and scowled. She followed reluctantly after her brothers (who were now lugging a basket of cookies courtesy of Linda Flynn) outside and across the street.

The girl was still in the front yard, but now she was on her hands and knees and rummaging through one of the many boxes that were scattered all over the lawn. Candace arched an eyebrow at the hair colour and rolled her eyes. Some people just don't have a sense of style.

"Hi!" Phineas greeted.

The girl looked up in surprise at the welcoming party that had appeared on her lawn before smiling and standing up. She brushed the grass off of her knees before saying, "Hey!"

"I'm Phineas Flynn. This is my sister Candace-" the teen managed a smile and waved half-heartedly, "-and this is my brother Ferb."

Ferb waved as well. The girl stared at his green hair and then at Phineas' and Candace's red hair. Phineas caught on to her confusion and explained, "He's our stepbrother. He doesn't talk much."

"A man of few words huh? That's cool." The girl smiled. "I'm Misty."

Phineas held out the basket and her blue eyes widened. "Are these chocolate chip cookies?" she asked hopefully.

"I think so. They are Mom's specialty."

Misty plucked one from the basket, took a bite and smiled. "No kidding. These are awesome!"

Candace quelled a sigh and wondered if she could go back home. The last thing she wanted to do was hang around a bunch of ten-year-olds. She was about to slip away as nonchalantly as she could when Misty suddenly said, "You're about fifteen, right?"

Candace raised an eyebrow. "Yes. Yes I am."

"You might like my older sister. You seem like you would get along." Misty placed the basket gently on the ground before cupping her hands around her mouth and hollering, "Maybelle! Get out here!"

"What?" came an irritated reply.

"Just get out here!"

A few seconds later another girl with long blonde hair and the same blue eyes as Misty appeared in the doorway. There was an annoyed expression on her face and hands were on her hips. "And how many times do I have to tell you not to call me-uh...hi?"

For she had just noticed they had visitors.

Misty grinned. "Everyone, this is my older sis Maybelle. Maybelle this is Phineas and Candace Flynn and Ferb-" she trailed off uncertainty.

"Fletcher," Phineas whispered.

"And Ferb Fletcher," she continued. "They're our new neighbours."

"Nice to meet you. As you can tell, she got the cool name and I didn't. Please call me May." May straightened her black skirt and crossed her arms over her pink button-up shirt. "Welcome to the dump."

Phineas glanced around the yard. "Yeah, you sure have a lot of unpacking to do."

Misty sighed. "I know right? It's gonna take forever!"

"Then you better get started," May said coolly. "You heard Dad. He wants all of our stuff unpacked by dinner."

"We can help!" Phineas said eagerly. "It'll be a lot faster if we all work together! And we can get Isabella to help!"

"Isabella?" Misty asked curiously.

"She lives right next to you. Come on, we'll introduce you to her!"

The three kids took off and May scowled after her sister. "Ugh, she never listens! Oh well. Not my problem if she doesn't unpack in time."

Candace shook her head. "I know what you mean. My brothers never listen to me either. Heck, I'm sure they'll probably be working on some crazy invention right now."

May blinked. "Invention?"

"Yeah. They've been building a bunch of stuff all summer long. There was a rollercoaster, a few rockets, some time travel, some-" Candace cut herself off and sighed. "And now you think I'm crazy just like my mom."

"On the contrary, I think it's possible," May said. "If my sister can get away with turning our old backyard into a petting zoo and sneak into an R-rated movie with my dad in the exact same theatre, then it's entirely probable that your brothers can do all that."

Candace couldn't believe what she was hearing. "You mean your sister does crazy stuff too?"

"Not exactly crazy stuff. More like breaking parental laws rather than the laws of physics. But she still gets away with everything."

"And now that she's met Phineas and Ferb, you can expect nothing to change," Candace stated glumly. "I've tried everything."

May smirked. "I'm sure that's an exaggeration. But...maybe I could help."

"I could use all the help I could get." Candace smiled. "I can help you unpack if you want. Then we could plot and plan and I'll introduce you to Stacy."

May shrugged. "Sounds good to me. I was told to make friends. I can take that off my to-do list now."

Candace grinned. She never would have thought her new neighbour would be someone who had trouble busting their sibling. It's fate! "Is it just your parents, you and your sister?" she asked curiously.

"We've got a brother, but he lives at school," May replied. "And I mean that literally. It's this really fancy, special high school. He boards there. But Monty comes down when he can."

"How come you're not there?" Candace then bit her lip. "Sorry. Am I getting too personal?"

May waved a hand dismissively. "Not at all. My father has different expectations for Monty than he does for us, I guess. He didn't have a choice of where he was sent. I, on the other hand, got to pick. I'm not sure why. But I guess it doesn't matter now. Thanks to this move I'm no longer able to go to my old high school. Different districts and all that."

"That sucks," said Candace sympathetically. "But hey, we'll be at the same school."

"That's comforting." May smiled. "Come on, we better start the wretched unpacking process. Fire off any other questions you have on the way."

They filed into the house and Candace could not help but ask, "What's with your sister's hair?"

May laughed. "She likes to dye her hair. I think this is the colour she's sticking to, though. I know, she's weird."

...

Phineas rang Isabella's doorbell and the door was thrown open instantly. "Whatcha doin'?" Isabella asked cheerily. Her smile faltered slightly when she noticed a girl standing next to Phineas with a smile on her face.

"Hey Isabella! This is your new neighbour Misty. We just met her!" Phineas introduced.

Isabella brightened again. "Welcome to Danville! I'm Isabella, leader of Fireside Girls Troop 46231."

"Nice to meet you," Misty said. "Phineas and Ferb said they were going to help me unpack. Do you want to come?"

"We're going to unpack the fun way," Phineas said excitedly.

Isabella grinned. "I'm in! And then later we can introduce you to the gang."

"The gang?" Misty asked in slight bewilderment.

"You'll like them," assured Phineas. "We have to make a quick stop before we go back to your place."

The four kids walked across the street and entered the Flynn-Fletcher garage. Misty looked around, a bit confused. "What are we doing?"

"We are going to build a machine that'll speed up the unpacking," Phineas explained. "We just have to make up the blueprints."

The white-haired girl widened her blue eyes as Phineas and Ferb got to work. "Do they do this often?" she whispered.

Isabella giggled. "You have no idea."