PHINEAS & FERB

GO TO GRAVITY FALLS

A Fan-Fiction Series By

HAYDEN STEPHENS

AKA

PHINEASFLASH25

A BRIEF DISCLAIMER BEFORE THE STORY BEGINS:

I do not own the shows Phineas and Ferb OR Gravity Falls, or any of the other properties and franchises this series might feature. This is just a non-profit Fan-Fiction of my own imagining, and credit for the creation of the original work goes to the Original-Creators and the Walt Disney Company.

The story takes place about 5 years after the finales of both Phineas and Ferb and Gravity Falls, so you'll have to go and watch both shows in their entirety to fully understand and appreciate what happens. I hope you enjoy it!

CHAPTER-1

A NEW SUMMER BEGINS

It all started on the first day of Summer Vacation, 5 years after the Best Summer Ever. Phineas Flynn and Ferb Fletcher, two extraordinary step-brothers of unrivalled genius and passion, had just finished their Freshman-Year of High-School, and they were excited to kick-off their summer with the most exciting, most AWESOME-TASTIC Big-Idea yet.

The only problem is, Phineas and Ferb have been at this for a long time now, and it's becoming harder and harder to top themselves. When they were just 10 years old, they began the Summer constructing and riding a gigantic Rollercoaster that stretched across the entire city of Danville. The year after that, to celebrate the Fourth of July, they put together the World's Biggest Firework-Show, AND they reenacted the Revolutionary-War with holographic technology. They even solved the ancient mystery of Stonehenge! (Turns out it was an ancient portal to the Dimension of Magic constructed by Earth's most powerful Wizard, Merlin!) But what else was there left to do?

To answer that question, Phineas and Ferb did something astonishingly familiar; they sat under the great big tree of their backyard, and let their imaginations run wild. Perry, their loyal pet platypus, was curled up in Phineas' lap, sleeping.

"What to do, what to do, what to do…" Phineas muttered. Lately it felt like he was getting slower, like the ideas in his head took longer to form, to gestate, and then explode with life. His friends Baljeet, Buford, and Isabella, they didn't see any difference, and they had told Phineas that he was just being impatient with himself, that he was just as sharp as ever. But no matter how much he wanted to be reassured, Phineas still had this dreadful feeling deep inside, the feeling that his best days were behind him, that he had peaked too soon.

"Hey, Ferb?" Phineas asked. Ferb looked up from the novel he was reading. "You don't think I'm slipping, do you? That I'm getting slower? Or... less fun?"

Ferb shook his head. Phineas sighed and looked up at the sky. An airplane flew over their heads.

"I swear this used to be a lot easier. It used to be we had TOO MANY ideas, and we had to choose which one to do that day and which one to stash away for later. And we can't just build another rollercoaster, not without making it even cooler than the last three! We already invented time-travel, we rediscovered Atlantis, we created the world's biggest bowling-ball, we found a Dodo bird, we went to Mars and discovered a living civilization of Martians, we went BACK to Mars and checked up on said Martians, created a fully-functional dairy-farm on the Moon, created a giant mutant ant-farm, a giant robot version of Perry, a beach party, a movie-trilogy, a superhero mecha-suit, an observatory…"

Phineas listed off dozens more of their Big-Ideas, and then he finally stopped to catch his breath.

"We've set the bar too high, Ferb! What else is there?!"

And then, Ferb spoke.

"Perhaps the answer is on your phone."

Phineas reached into his pocket and pulled out his phone. It was buzzing with an alert of some kind. His eyes widened.

"It's from our old research satellite!"

"Which one?" asked Ferb. Unusual, considering that Ferb generally spoke only once a day. He's more of a man of action.

"The one we built to maximize our cell-coverage and monitor the Earth for paranormal-anomalies. The only one that DIDN'T get destroyed or mysteriously vanish by the end of the day. It's picking up TWO radio-signals going off in uninhabited areas. One in the Arctic, the other in the Antarctic Ocean."

Phineas' frown turned into a mischievous grin.

"Ferb, I know what we're gonna do today!"

Ferb gave a casual thumbs-up, and then looked down at Phineas' lap, where a blue domesticated Platypus once was. Following his brother's gaze Phineas noticed this as well.

"Hey, where's Perry?"

While the boys were distracted, Perry wandered off and disappeared into the house. After checking to make sure the coast was clear, Perry ditched the "mindless-animal" routine and stood up on two feet, put on his fedora, and opened the secret door behind the bookshelf. When he's not the Flynn-Fletcher Family's pet Platypus, Perry is the elite animal superspy codenamed Agent P.

Perry used one of the great many secret entrances to access his top-secret underground lair, and sat in front of his main computer to receive his daily briefing from Major Monogram, the leader of O.W.C.A. (The Organization Without a Cool Acronym). Monogram appeared on-screen, more tired and elderly than ever. Unlike usual, Carl was onscreen as well, instead of working the camera. Carl, the former unpaid-intern, now a full, official member of the agency, with a salary, 401K, and everything. He was even sporting a decent mustache.

"Good morning, Agent P," Major Monogram said, "Before we begin today's briefing, there's something else that needs to be said first. You've… probably noticed that I'm not getting any younger, and well, I've put a lot of thought into it, and I've decided that I'll be retiring very soon. But before I go, I'll be coaching Corporal Carl and preparing him to take my place."

This didn't come to much surprise for Perry. He had a feeling this day was coming, and he knew Carl would be Monogram's first choice for a successor.

"So today, I'll be handing the briefing over to Carl! If you need me, I'll be getting another bagel from the cafeteria."

Corporal Carl straightened his glasses, pulled out his script, and began reading it aloud, doing his best impression of the old Major, which Perry had to admit, was spot-on.

"Good morning Agent P. Since the defeat and subsequent arrest of Dr. Diminutive and the evil-scientist organization L.O.V.E.M.U.F.F.I.N. last week, black-market dealings in Inators and other exotic-technology have plummeted. Agents E and BH are still tracking down Mister Mystery, and we'll be sure to update you on any news regarding his whereabouts. I'm sure that with a Bald-Eagle AND a Bloodhound on the case, we'll be getting a breakthrough any day now.

"We understand that you feel obligated to see the Mister Mystery case to its conclusion, but for the time being, we have another mission we need you to focus on. Just 5 minutes ago, our satellites detected 2 unidentified radio-signals going off at opposite sides of the Earth, one in the Arctic, the other in the Antarctic Ocean. We don't know who is sending out these signals, or why. It might be an S.O.S., or an elaborate trap. Either way, we need answers. Both agents Harry the Hyena and Peter the Panda are being deployed to investigate the Arctic anomaly, and we need YOU to investigate the Antarctic anomaly.

"Behind you, rising dramatically from the floor…"

As Corporal Carl said this, a circular portal built into the floor slid open, and in a puff of smoke, emerged a cart of advanced spy-gear, and a familiar, hunchbacked figure dressed like a pharmacist, stood holding a remote control in his hand.

"… Is Doctor Doofenschmirtz, with some new high-tech gadgets for you to use in the field."

Having since given up his comically-futile attempts to conquer the Tri-State Area, Heinz Doofenschmirtz has reformed, and is now working as one of O.W.C.A.'s top scientists and gadgeteers. His long, painful experience with explosives also makes him an over-qualified demolitions expert.

"Alright Perry the Platypus, first up we have a brand-new spy-watch, equipped with a two-way communicator, a radar-ping, a ridiculously powerful electromagnet, and a laser-beam that can burn through just about anything. I mean, you might have trouble burning through a cage made of unburnabullium, but what are the odds you'll run into that?"

Doof handed Perry the spy-watch, and from his cart he pulled out a set of enormous goggles. "And these omni-specs will provide night, infrared, ultraviolet, and x-ray vision."

Doof gave Perry the omni-specs, and then ran through the other gadgets. There was an upgraded grapple-gun, and a black remote-controller with a long, crooked antennae, a blinking red dot at the end of said antennae, and a big red button at the center of the remote. "…And THIS is my personal favorite. Behold, THE DESTRUCT-INATOR FIVE-THOUSAND!" Doof raised his arms in the air while exclaiming the name of his device, lightning and thunder going off for dramatic effect.

"Eh, see? I finally got those lightning effects that the Regurgitator used. Remember that guy? Dude had style."

"Stop wasting time, Doofenschmirtz, Agent P needs to get moving!" Said Corporal Carl, who was still on the monitor.

"Sorry, sorry, I'll hurry it up," said Doof. "Okay, so you know how I've always had a self-destruct button in all of my Inators? Well, THIS Inator is nothing BUT a self-destruct button! Only instead of blowing itself up, it blows up whatever you point it at! It's genius, right?"

Perry stared down at the Destruct-Inator he held in his paw, with his eyebrow raised. After some thought, he stuffed the deadly invention in his pocket.

"And finally, here are the keys to your upgraded hover-car!" Doof tossed Perry the keys, and Perry caught them as he ran off into the hangar. He pushed the "unlock" button on the key-thingy, and sat in the driver's seat of his new vehicle, a flying spy-mobile with powerful rocket-boosters that was vaguely shaped like a platypus. The hangar door opened, revealing the sun and sky. Perry stepped on the gas, and blasted off on his latest assignment.

Meanwhile, Phineas and Ferb were gearing up for their own adventure, grabbing equipment from their bedroom closet and stuffing them into their backpacks. Phineas put on his yellow thermo-hoodie, something he invented last winter on their Christmas vacation to Alaska. Instead of being thick, heavy, and cumbersome like most winter clothing, this hoodie is thin and casual, but it's woven with special, insulating meta-material, and lined with a network of wires and technology that generate a constant stream of heat to keep the user warm, like an electric-blanket that you can wear in public as casual clothing. Phineas' jeans and sneakers incorporated the same technology, and Ferb had his own set as well.

"We're also gonna need some snowshoes, our snowboards, our hoverboards, our infrared-goggles, a tranquilizer-rifle in case we run into any polar bears or yetis, a flare-gun, a grapple-gun, a laser-gun, a canister of nanobots, our explosive, laser-guided dodgeballs of doom, and our cerebral-conducting power-rings. Am I missing anything, Ferb?"

Ferb shrugged. Both of their backpacks were filled to the brim with advanced, physics-defying gizmos. But then Ferb remembered something, and raised his right hand and pointer finger to indicate the number one. He reached underneath his bed, and pulled out a red toolbox, rusted and worn after many years of service. It was Ferb's favorite toolbox.

"Perhaps we should also pack some snacks for the road."

Phineas smiled. Good old Ferb, always thinking ahead.

"I know I say this a lot Ferb, but I always mean it. This is gonna be the Best Day EVER!"

Phineas and Ferb rushed downstairs, grabbed some snacks out of the pantry, went to the garage to get their bikes. Just as they were doing this, their mother, Linda Flynn, was in the family car, backing out into the driveway.

"Hey boys, where are you off to?"

"Hey, Mom!" said Phineas. "Ferb and I are riding our bikes over to Greenland! But don't worry, we'll be back in time for Lunch, promise!"

"Well, just be sure to call me on your phones if there's trouble! I'm going to the Saint Jerome's Charity Book-Fair to donate some of these older books. Love you!"

"Love you too, Mom!"

And with that, they left the house and went their separate ways. Linda assumed that the boys were just going on a regular bike trip around town, but if she had checked her rearview, she might have noticed her sons had both pushed buttons on their bikes, transforming them into nuclear-powered motorcycles with anti-gravity turbo-boosters, and then took off into the sky, flying at Mach-speeds in a northerly direction.

Less than 10 minutes later, Phineas and Ferb were closing in on the mysterious radio-signal. The Arctic landscape below appeared to be devoid of all life, but in the distance, an odd geological structure rose to touch the heavens. It looked like a rock formation that one would find in Utah, but composed entirely of ice and snow, an ethereal archway out in the middle of an otherwise completely flat and barren wilderness.

The two step-brothers landed down about 100 feet outside the archway, and wearing their tricked-out snowshoes, walked over the snowy, frostbitten ground towards it.

Phineas pulled out and double-checked his cell-phone.

"According to our satellite readings, the signal is coming from this archway, smack-dab in the middle right there."

Ferb stroked his chin. "Hmmmmm…"

Phineas immediately knew what Ferb was thinking, and he snapped his fingers and widened his eyes with realization.

"You're RIGHT, Ferb! It IS just like Stonehenge! It's not really made out of ice, OR stone, it's made out of quartz-crystal! And it focuses electromagnetic energies from both cosmic and terrestrial sources to pierce the fabric of space-time, and open a portal between dimensions! Awesome!"

Phineas opened his backpack and pulled out an industrial-grade spectrometer. "And this radio-signal must be some kind of S.O.S. being broadcasted and leaking out from the other side, but the message is probably being scrambled into gibberish, because the portal is closed on our end…" Phineas looked up from his device and studied the archway.

"…Hmmm, who do you think it is?"

Ferb shrugged.

Phineas put away the spectrometer, and pushed a few buttons on his phone. He boosted the signal, converted it to sound, and played it out loud for them to hear. The message was indeed gibberish.

"!nruter yam I taht os rewop tneicna eht ekovni I !nrub ot emoc sah emit yM !L-T-O-L-O-X-A"

"Just imagine, Ferb! An alien civilization from beyond our own dimension of reality, a whole new UNIVERSE to explore! The possibilities are endless!"

Phineas and Ferb both whipped out their ray-guns, and began using them to charge up the quartz-crystal warp-gate. What they didn't realize, however, was that the radio-message wasn't scrambled at all. It might have sounded like gibberish, but if one were to play it backwards, they would've heard…

"A-X-O-L-O-T-L! My time has come to burn! I invoke the ancient power so that I may return!"