Hey all, this is my first P and F fanfic. So the reason why I'm writing this is that as much as I loved the movie, I was a bit bothered that the main focus was on the relationship between Phineas and Perry, and Ferb was kinda pushed to the side. So this is what I think might've been going on in the head of the Man of Few Words.

A lot can happen in a day.

Ferb Fletcher is aware of this fact more than anyone else. After all, each rising sun means the promise of a whole new adventure when you're the stepbrother of Phineas Flynn.

Currently, the green-haired youth was whizzing through the air on a jumbo badminton shuttlecock. Just another typical day.

"Ferb!" the short redhead beside him cried out. "It looks like we're going to hit that building that looks vaguely like your head!"

No one but Phineas could calmly make an observation like that while staring in the face of potentially mortal peril.

Fortunately, their fall was broken by some large device sitting on the penthouse balcony. They just barely avoided hitting the person working on the machine, who appeared to be a... German pharmacist?

"All right, what's up with the giant shuttlecock?" the man demanded as he approached the young pilots.

Cue the apologies and introductions of themselves to the stranger. All dictated by Phineas of course, but Ferb didn't mind. The former does the talking, the latter the doing. That was how their relationship worked.

One thing led to another, and Ferb found himself helping the man, who called himself Dr. Heinz Doofenshmirtz, with fixing his Other-Dimensionator (why a pharmacist needed such a thing, he could only guess). Ferb questioned his brother's willingness to assist someone they barely knew, but as per usual, he said nothing. While he wasn't always in line with Phineas' way of thinking, Ferb trusted him with his life.

When the repair was nearing its end, Ferb boosted his brother up so he could install the final piece. He was just about to do so when some unseen commotion coming from behind caused Phineas to glance back.

"Oh, there you are, Perry," the boy said brightly.

Sure enough, there stood their aquamarine platypus, chattering away. As he and Phineas rushed to greet their pet, Ferb decided to push the mystery of how the mindless creature made it to the top of a forty-story building out of his mind. Perry had a tendency to show up in the strangest places.

Dr. Doofenshmirtz seemed surprised to see the semi-aquatic mammal as well. "Is every platypus named Perry?"

How many beaver-tailed, duck-billed animals with that name could there be in the tri-state area?

As oblivious as ever, Phineas replied, "In a perfect world, yes."

This answer appeared to satisfy the scientist. "Aww, well he's a cute little fella. Hi, there! Gootchie- OW, OW, OW!"

"Perry, no!" Phineas admonished as the boys disconnected Perry's mouth from the man's finger. "We do not bite the elderly!"

"Again- ow," an offended Doofenshmirtz said. "No, it's okay. Platypuses don't typically like me."

For the next several minutes, the three humans found themselves subject to a very tedious cycle: they would be on the verge of finishing the machine when Perry would start acting up, from stealing the missing piece to peeing on the sofa, thus interrupting its completion.

This was extremely unusual for Perry; he hadn't misbehaved like this since he was a mere platypup. Ferb could tell that Phineas noticed this as well, but was probably dismissing it as being unaccustomed to the new surroundings or something. But Ferb was not so easily convinced.

"I'm sorry, Dr. D," Phineas apologized. "We should take him outside."

"No, no, it's all right," the scientist answered. "I was planning on replacing this old couch anyway. Now come on, let's light this popsicle stand... or however the saying goes."

So Ferb was left holding Perry while Doofenshmirtz picked up Phineas to at last insert the missing piece.

"You know, it's kinda weird," the doctor reflected. "I'm usually thwarted by this point. Huh, I guess he's not coming."

Thwarted? Why would someone have the need to-

But before Ferb could wonder any further, the machine began starting up.

"And now," Doofenshmirtz announce dramatically. "The mind-blowing first images from beyond our dimensional reality!"

Ever breath (including Perry's) hitched as bright green light spilled out of the Other-Dimensionator, forming a sphere that served as a window to look upon... a couch.

After Doofenshmirtz got over the disappointment of his less-than-climactic achievement, he attempted to switch the much nicer sofa with his old soiled one. For the first time, Ferb sensed that Phineas was starting to doubt the man's character. There were countless things that his brother wanted to do before their summer vacation was up, but engaging in criminal activity certainly wasn't one of them.

So the two boys simply looked on, unsure of what to do, until Phineas' attention (which despite his intelligence could never focus on one thing for too long) was diverted by something in the distance. Always in search for anything of interest, he quickly went to investigate as Ferb trailed behind.

"Hey Dr. D, look at this!" Phineas called. "You're famous here."

That was the understatement of the century, no matter what dimension they were in. Both the man's name and face was found wherever they looked.

The doctor's eyes became drawn upwards, towards a blimp passing in the sky. "Heinz Doofenshmirtz," he read. "Your leader?"

He must have imagined it, but Ferb could've sworn he heard a nervous gulp erupt from the platypus in his arms.

While Doofenshmirtz left to berate the white-mustached secretary inside, Phineas and Ferb continued to marvel at the sight.

"I'd say he's done pretty well for himself," the former commented. "What do you think Perry?"

Whenever the boys addressed their pet, he would always respond immediately, like he could actually understand them. But this time, Perry paused, almost as though in hesitation, before chattering his approval. Odd.

"Hey where is Dr. D?" asked Phineas.

Ferb simply pointed through the door.

And so the two approached the front desk to ask for the whereabouts of their new friend. The man there was at first adamantly against admitting them without an appointment. But all it took was for Phineas to explain their situation and connections with the tri-state area ruler, along with flattering on the secretary's handsomeness (Ferb noticed that he avoided mentioning the mono-brow) for them to be allowed to take a ride on the swivel chair amusement park ride up to the main office.

"That was awesome!" Phineas declared as they entered the room, where they were met by not one, but two Dr. Doofenshmirtz's.

Their first dimension companion seemed glad to see them, but the same could not be said for his darker, more melancholy counterpart.

"You dare bring a secret agent in here?" he accused.

"This boy's a secret agent?" the first doctor asked, pointing to Phineas.

"No, no, not him," the other said irritably.

The first dimension Doofenshmirtz guessed again. "The quiet one?"

Ferb resisted the urge to roll his eyes. He was never seen as the bright one, or the one who always had a witty comeback. No, he was the one who was silent in comparison with his talkative brother.

Doofenshmirtz was running out of options. "...this potted plant?"

"THE PLATYPUS!" the exasperated second Doofenshmirtz finally revealed. "That's secret agent Perry the Platypus!"

Phineas looked ready to laugh. "Hey, he's just a platypus. He doesn't do much."

It appeared that the eye-patched Doofenshmirtz was about to laugh himself. "Oh this is rich! You really think that he's your pet, don't you? Wrong! He's using you! You're just his cover. He's a secret agent!"

When he saw the skeptical faces all around, he added, "Here let me prove it. General Platyborg, come down here at once."

In rocketed a half-platypus, half-robot version of the boys' beloved Perry.

Ferb paid close attention to the Platyborg's eyes. Rather than their Perry's vacant gaze, his were in complete focus, with a certain evil gleam that revealed the intelligence just beyond them. No, it couldn't be...

"You see that platypus?" Doofenshmirtz the second said the robot. "You know what to do."

Quick as lightning, the Platyborg descended upon the poor animal and smacked him clear across the room.

Perry, of course, didn't do much.

Phineas and Ferb rushed to aid their hurting pet, leaving the two Doofenshmirtz's to argue over who was right.

"Wait, let me try something," 2nd dimension Doofenshmirtz said. "Platyborg, do the same thing to those two boys."

Neither Phineas, nor Ferb, nor 1st dimension Doofenshmirtz knew what to do as the Platyborg reared his arm back, ready to strike the two kids.

Perry, however, did.

Standing upright on his hind legs, he sent a perfect right hook straight into the face of his robot self. As the Platyborg toppled backwards, the platypus poised his body in preparation for a follow-up attack.

It was Phineas who voiced the thought that was going through both of the stunned boys' heads.

"Perry?"

The next chapter will pick up right from where this left off, but after that I may skip around a little bit. There will most likely be five chapters total. Hope you liked it!