What We're Going To Do Today

by Himntor

Rating: everyone
Tags: Human, Adventure, Crossover
Length: 3596

Phineas and Ferb create a portal to another universe... Equestria! Much Platypus and Evil Scientist ensues.

Phineas and Ferb build a portal to another universe, and it turns out to be Equestria! See what happens as the two clever boys and their pet Platypus adventure around Ponyville, but who knows what might be lurking about? Certainly there must be an evil scientist afoot, bent on stealing the very essence of ponies; their color.

Published 1970-01-01 00:00:00 UTC
Last updated 2013-04-24 04:10:53 UTC

Any Average Day

It was a bright and sunny day in Danville, perfect weather for coming up with new ideas. The short red haired and pointy headed boy named Phineas was lying under his backyard tree next to his ever silent green haired brother, Ferb.

"Hey Ferb, we haven't gone anywhere interesting for a while now. When was the last time we tried a different universe?" asked Phineas.

Ferb took out a calendar, looked at it for a moment and shrugged.

"Great! I know what we're going to do today. Let's get started," said Phineas excitedly as he took out his cellphone, but paused for a moment. "Hey... where's Perry?"

~~~Meanwhile, on the other side of the Tri-State Area~~~

"Doofenshmirtz Evil Incorporated!"

Agent P had been assigned to once again stop Doofenshmirtz from wreaking havoc on the Tri-State Area. He flew straight for the tall purple building and crashed into Doofenshmirtz's home. After he crashed, he was immediately trapped by a large amount of super-quick drying plaster.

"Ah, Perry the Platypus! So nice of you to crash by. And I mean crash literally, you broke down my wall for the fifteenth time this week!" exclaimed Dr. Doofenshmirtz while motioning towards his destroyed wall.

"But at least you crashed into the wall that was still wet, so I don't have to try and trap you! How convenient. Norm! Fix the wall again." Doofenshmirtz ordered his giant robot, Norm.

"I will fix the wall, again!" said Norm as he picked up the bucket of plaster and began to rebuild the wall.

"Good. So, where were we? Ah yes! My evil scheme, but first a quick backstory! You see, in my childhood there were never many bright colors in my life. You remember Gimmelshtump? It was never a very pretty village, all this grey and brown, everything was so dull and blah blah blah. Anyway, I have created the Colordisintegratorinator!" Doofenshmirtz revealed a large metal machine with a giant hose attached to it.

"It sucks away all the color from anything, and I will use that color to brighten MY building, and it will become the most colorful building in the world! Everywhere else will become so dull that everyone will want to come to my building, but I'll make them pay for it! I'll make MILLIONS!"

Perry rolled his eyes.

Doofenshmirtz scoffed. "Don't you roll your eyes at me! This plan is sure to work! Even after all the others you've foiled. I've just got to find a large source of color first, the machine runs on the stuff and I only have enough to run it for a few seconds, so I gotta find a huge amount of color! Luckily I have this Colortrackinator, which shows me where there's the most color, so let's start looking!"

Doofenshmirtz put his Colordisintegratorinator machine on a large flying scooter, and also brings along Perry for the ride. He couldn't just leave his nemesis all alone in his apartment evil lair.

"Okay, let's get the searching party started!" said Doofenshmirtz as he opened the retractable ceiling and took off into the sky.

~~~Back at the Flynn Household~~~

"Ooo, those boys are soooo busted!" said Candace as she watched her two brothers work in the backyard from her window.

"Candace? Candace are you there?" Candace looked back at her cellphone and completely forgot about ever calling.

"Oh, sorry Stacy, gotta go! Phineas and Ferb are up to something, and I've got a gut feeling this time!" Candace hung up and dashed downstairs. The tall and long necked red headed sister of Phineas and Ferb had been trying to bust her brothers for the past three summers, failing every attempt at showing her mom what insane things the boys had built. But this time, oh yes, this time she was going to nail them for sure.

"Mooom! Moooom! MOM!" Candace's mom was no where to be found, so she walked into the backyard. "Phineas! Do you know where mom went?"

"She's downtown shopping." answered Phineas.

"Rrrgh! She had to pick today of all times!" exclaimed Candace. She dashed out the door and down the street towards the downtown shopping mall.

Phineas was looking at some blueprints. "Wow Ferb! This portal is coming along great. Pass me the void converter."

Ferb passed his brother the required tool and soon after their friend from across the street, Isabella, walked in. "Hey guys, watcha doin'?"

"Hey Isabella! We're building a portal to another universe!" answered Phineas. "You wanna come?"

"I would love to come! But I can't, I have a dentist appointment in an hour, I came just to see whatever you guys were up to." answered Isabella sadly.

"We ain't got no lame dentist appointments!" Another voice called out.

Suddenly their friends Buford the Bully walked into the backyard, carrying Baljeet the science nerd fireman style.

"Hey guys! You wanna help us build a portal to another universe?" asked Phineas. Ferb continued to hammer in the background.

"I don't have the time, I heard there was a new math museum opening in town tonight! I'm going to be sure to be the first in line." answered Baljeet from behind Buford.

"Nerd." Buford tossed Baljeet on the ground with an 'Oof!'

"Cool! What about you, Buford?" asked Phineas.

"I just came to borrow some gum, you got any?" asked Buford.

"Sure!" Phineas pulled out a piece of gum from his pocket and tossed it to his friend.

"Thanks." Buford walked back out as quickly as he had come in.

"Yeah, I better be going too. Good luck guys." said Isabella.

"I will come with you!" said Baljeet.

"Thanks for stopping by! We'll tell you all about it when we get back." said Phineas as he waved them off.

Phineas looked back at his brother. "Alright Ferb, is it ready?"

Ferb gave a nod.

"Sweet! Fire it up!"

Ferb pressed a big red button. The device was a large platform with three pillars in a triangle. The pillars lit up and began to  spark electricity around the area and create a portal in the middle of the platform.

"It's working! Just a few more minutes and it'll be ready!"

~~~Meanwhile, In Equestria and outside of Sugarcube Corner~~~

"Pinkie, I've just about had enough of your 'doozies'. Whatever it is, there is no sign of it happening any time soon!" yelled Twilight.

"But Twilight! It's just about to happen, I can feel it! This doozy isn't even close to the one I had last week!" said Pinkie Pie, her body vibrating violently.

"Ugh! I give up, I'm going back to the library. Let me know whenever this doozy of yours happens." said Twilight beginning to walk back to the library.

"Ooookiiieee dooookieeee looookkiieee." said Pinkie Pie, vibrating to the point of no return.

Fluttershy and her pet Angel walked by Sugarcube Corner and paused a moment. "Um, Pinkie... what's going on?"

"Fluttershy! There's a great big doozy about to happen! Follow me!" Pinkie grabbed her friend and dashed off towards the edge of town and stopped at an empty field.

The two ponies stared into the empty landscape. "Pinkie, what are we waiting for?" asked Fluttershy.

"Just wait for it! It'll be here in just a minute!" answered Pinkie.

Twilight found them again and approached. "Are you seriously just going to stand here and wait for this doozy to happen? What is it anyway?"

A small light began to appear in front of the three ponies.

"Oh oh oh! There it is! Wait wait wait, I bet Gummy will want to see this!" Pinkie Pie zoomed off and immediately zoomed back with her pet Gummy in hand.

"Here it comes, girls!"

~~~Back in Danville~~~

"Here it comes, Ferb! The moment we've been waiting for!" said Phineas excitedly.

The two boys stood and watched with their eyes wide as their portal opened up into another universe.

Phineas reached out at the completed portal. "Coooool." It was a dark blue color with the texture of water, but could not be seen through.

"I guess we have to go in and see what's on the other side! Let's make sure the portal is stabilized first," Phineas hit a button on the platform to stabilize the portal on the other side. "Alright. Let's go!"

Before they jumped through the portal they heard a loud crashing noise from down the street.

"What was that?" asked Phineas. A familiar chattering noise came from behind. "Oh, there you are Perry! Where you been?"

~~~Five minutes earlier~~~

"Perry the Platypus, you're making this harder than it needs to be!" exclaimed Doofenshmirtz as he tried to fly and hold off Perry the Platypus at the same time.

Perry had managed to break out of his plastered imprisonment and was attacking Doofenshmirtz, attempting to take away his Colortrackinator, but Doof fended off the small platypus. Doof struggled to keep the scooter balanced. Perry was loosing his balance, swinging back and forth on the teetering platform. He jumped onto Doofenshmirtz's backside and climbed over top of him.

"Hey, cut it out! Can't you see I'm trying to fly this thing!?" yelled Doof.

Perry ignored Doofenshmirtz's complaints and kicks him in the face, making him fall backwards. He takes control of the scooter and aims it towards a suburban street, and promptly rips off the control stick.

"No! Now look at what you've done!" laments Doofenshmirtz, frantically trying to reattach the control stick.

Perry tips his hat and jumps off, letting Doofenshmirtz crash down the street.

"Curse you, Perry the Platypus!!!"

Perry activates his glider and softly landing in Phineas's backyard, quickly taking off his fedora and starts acting like any other animal.

"Great, now my Colordisintegratorinator is trashed! But my Colortrackinator is still working," Doofenshmirtz looked at the small radar on the device. "And it shows that the large amount of color I was searching for is just right down the street! Hmm," Doofenshmirtz pulled out a cellphone, "Norm, get down here I need help!"

~~~Back in the Flynn Backyard~~~

"So Perry, do you wanna come on an adventure with us?" Phineas asked his pet monotreme.

Perry let out another short chattering noise.

"Sweet, let's go!" Phineas picked up the little platypus and the two boys jumped through the portal, hopeful to see something amazing on the other side.

Meanwhile, the evil Dr. Doofenshmirtz and his giant robot Norm were busy modifying the Colordisintigratorinator and Colortrackinator, combining the two into a portable Color-suck-and-store-inator.

"I am not yet defeated, Perry the Platypus. I will steal as much color as I can find and I will use it on my home and become the new ruler of the TRI-STARE AREA!!!" Doofenshmirtz fired his finished device on the neighborhood around him, sucking away all the colors from the grass, streets and houses, leaving them boring and gray.

"Our houses!" cried the neighbors.

"My shiny new car!" cried another.

"Now I've gone full color blind!"

"My life can no longer get any grayer! Literally!"

"It's working! It's wooorkiiing!" said Doofenshmirtz excitedly. He quickly ran off in the direction of the large color source, zapping away all the color along the way.

~~~Back in Equestria~~~

"Hey Ferb? Where do you think the portal sent us?" asked Phineas as three techni-colored equines stared at the two boys in shock.

Ferb looked between his brother and the strange looking ponies and shrugged. "I believe we have teleported to Equestria."

Welcome to Equestria, Awesomeness to the left, Evil Scientists to the right

"What the--? Who are you?" asked Twilight. There had never been anything about strange blue portals and small monkeys coming out in any of her books.

"Whoa, talking ponies? How cool is that!?" exclaimed Phineas.

Pinkie Pie zoomed forward to greet the new visitors. "Ohmygosh, ohmygosh! You must be new here! My name's Pinkie Pie, these are my friends Twilight and Fluttershy!"

"Greetings! I'm Phineas and this is my brother Ferb. And this is our pet Platypus, Perry. He doesn't do much." said Phineas with just as much excitement.

"Oh my gosh, he's so adorable!" said Fluttershy. She flew forward and stroked the small platypus, to which he chattered graciously.

"Aww, he likes you!" said Phineas.

"I've never seen many platypuses around Equestria before. He's such a sweetheart!" Angel tugged on Fluttershy's hair demanding attention. "Right, sorry Angel."

"Hold on a second! Where did you come from? What is that big blue thing?" asked Twilight sternly.

Phineas glanced back at the portal. "Oh that, we built a portal so we could travel to another universe. It seems like we ended up in yours. Do all ponies here talk?"

"Almost all of them," Twilight glanced at Fluttershy. "And some more than others," She glanced at Pinkie Pie.

"Oh oh oh, we're gonna have to throw a 'Welcome to Equestria' party for you! We can have cake and cupcakes and there'll be streamers and balloons, and I can introduce you to all of Ponyville!" exclaimed Pinkie excitedly.

"A party for us? We'd be honored! Right Ferb?" Phineas nudged his brother who seemed to be in a trance.

Ferb blushed and nodded a few times.

"Sweet! Can Perry c-" Phineas noticed Perry had gone missing again. "Hey... where's Perry?"

"Where'd Angel go?" asked Fluttershy.

"And Gummy's missing too!" added Pinkie.

"I bet they decided to go and have their own party." suggested Phineas.

Ferb looked back where the portal was, but it had disappeared as well. He nudged Phineas and pointed at the empty area.

"Uh oh, it seems the portal disappeared. Maybe it wasn't as stable as we thought. Did you remember to bring the portal radar, Ferb?" asked Phineas.

Ferb brought out a small radar tool and scanned the area. A little blip appeared in the direction of the forest.

"Looks like the portal moved into that forest. C'mon, we better go stabilize it." Phineas started walked towards the forest when Twilight stopped them.

"Wait! You can't go in there. That's the Everfree Forest, all sorts of evil creatures and monsters are in there." explained Twilight.

"Monsters huh? Well I guess we can wait. The portal shouldn't be too unstable, so maybe we'll catch it later," replied Phineas. "So, were we going to a party or not? We did come to have some fun after all!"

~~~Back in Phineas and Ferbs backyard.~~~

"Yes, here it is! The source of all the color. It seems to be some kind of portal to another dimension," Doofenshmirtz paused in his assessment. "Why am I talking to myself? Let's just get this over with."

Doofenshmirtz jumped into the portal, whisking around through the air and finally being spit out in the middle of a dark forest.

"What? This can't be right, there's hardly any color here at all!" Doof referred to his Colortrackinator once again. "But there seems to be a lot of it outside this forest. I guess I'll have to start walking. Wait, what was that noise? Eww and what's that smell?"

A low growl was coming from beyond the dark underbrush. Doofenshmirtz walked carefully forward to investigate, when a Timberwolf jumped out and roared at Doofenshmirtz.

"Ah! Nice doggy, good doggy," Doofenshmirtz looked back where the portal had been, but it had disappeared. "Well... guess I'm running." He ran off, screaming as loud as he could while the Timberwolf gave chase.

~~~Beep beep beep... beep beep beep~~~

Perry anonymously walked away from his owners and hid behind a tree. Also following him was Gummy the Gator and Angel the Bunny. The three of them pulled out their fedoras and put them on tight.

Perry's wrist watch continued to beep, he pressed the button and let the message come in.

A holographic image of Major Monogram popped up. "Ah, Agent P! We have tracked your location to an unknown universe, and it seems Doofenshmirtz has followed you. I guess investing in that HUGE radar dish payed off, heheh. Doofenshmirtz is obviously up to no good, so it's up to you to put a stop to it. We have located two other agents in the area, find them and have them help you defeat Doofenshmirtz. Monogram out." Monogram's head disappeared back into the watch.

Perry looked at the other two agents standing beside him and gave a smile. Angel and Gummy gave a salute to Perry, and they soon took off in the direction of the Everfree Forest.

They managed to find Doofenshmirtz being chased by the Timberwolf at the edge of the forest. Doof had scrambled up a tree and was now throwing branches and leafs at the wolf, to minor effect.

"Oh, Perry the Platypus! I'm saved! Help me get rid of this terrifying dog made of sticks," begged Doofenshmirtz.

Perry looked on at the scene with amusement, but the moment quickly went sour as the Timberwolf looked in the agent's direction. It abandoned its earlier prey and went straight for the easier and smaller targets.

The Timberwolf lunged forward at the agents, scattering them in three different directions. Angel had run off to the right, Gummy had been tossed to the left and Perry managed to jump up and land on the Timberwolf's backside. The wolf turned its head on Perry and growled.

Perry quickly tipped his hat and a small buzzsaw dropped out. He turned it on and let it rip through the back of the Timberwolf's head, cutting the timber to bundles of sticks.

"You saved me!" cried Doofenshmirtz. He climbed down the tree and walked over to the agents. "Thank you so much, I thought I was done for! And now it's YOU who is done for!" Doofenshmirtz lunged at the agents and swiped them all up in a cloth bag. "Hehehe! Now I've got you and all your little friends trapped, and it was so easy! You never know how handy it is to carry a bag around everywhere."

Perry let out an annoyed chatter.

"Quiet you! Now, before I go sucking up all the color to this place, I'm gonna need an evil lair. Let's go exploring!" Doofenshmirtz took his catch deeper into the Everfree Forest, in search of any place that he could work with as an evil lair.

~~~Outside Sugarcube Corner~~~

"Time to introduce you to the gang!" said Pinkie. She brought Phineas and Ferb inside Sugarcube Corner where the rest of her friends were waiting.

"Hey everyone, this is Phineas and Ferb. They're going to be staying in Equestria with us for a while!" Pinkie introduced for them. Pinkie Pie had managed to set up a small welcoming party for the boys, consisting of cupcakes, fruit punch, some balloons and streamers and one big cake. "Feel free to help yourself to the food and drink!"

Phineas immediately went for a cup of fruit juice. Teleporting to another universe does have a way of dehydrating a boy.

"Well hello! I am Rarity. I must say I haven't seen any creatures like you around Equestria before, where are you from?" asked Rarity.

"Hi Rarity! We're from a town called Danville, which is part of the Tri-State Area," answered Phineas, "Are there not that many humans in Equestria?"

"There aren't any humans in Equestria, as far as I know anyway." answered Twilight.

Phineas took a sip of the fruit punch."Fascinating. So do you have a whole government ruled by ponies?"

"Sort of. Princess Celestia and Princess Luna are our governed rulers," answered Twilight.

A rainbow maned pegasus cut in. "Enough egghead talk! These guys came here to have an awesome time, am I right?"

"Totally! Who might you be?" asked Phineas.

"The name's Rainbow Dash, and I'm the fastest flier in all of Equestria!" introduced Rainbow Dash.

"Cut yer braggin', sugarcube. I'm sure they still want to get used to us ponies," an orange pony turned to the two boys with an open hoof. "Howdy, my name's Applejack. It's a pleasure to meet you."

Phineas shook Applejack's hoof. "Hi! It is kind of strange to be teleported to a universe with a bunch of talking ponies, but I've been through stranger. I would like to get to know more about you though, for instance what are all those marks on your flanks?"

"Why those are our Cutie Marks! Everypony gets one at some point in their life when they discover their special talent," explained Applejack "Do humans not have those?"

"Yup, we don't have anything that defines our special talents, although I can think of a few things what ours would be." answered Phineas.

"If you don't have Cutie Marks, then how do you know what your special talents are?" asked Fluttershy.

"We don't, some people just find what they're good at and do that for a living," answered Phineas. "Sometimes they never do find out what they're really good at, but there's always a world of possibilities open to them!"

The ponies all stared at Phineas confused.

"That's really weird." said Rainbow Dash.

"Rainbow!" chided Twilight.

Rainbow circled Twilight.. "What? It is weird! Not having a way to know your special talent, that's like being a blank flank your entire life! How embarrassing would that be?"

"From my point of view, having a Cutie Mark seems just as weird. It's still kinda cool though! What do you think, Ferb?" asked Phineas.

Ferb turned his head and pointed towards the front door. "I think we're in a bit of trouble."

Right as he finished his sentence three Royal Guards walked in and approached the boys.

"Are you the humans known as Phineas and Ferb?" asked the first guard.

"Yes?" replied Phineas coyly.

"Princess Celestia wishes to speak with you immediately."