The Flynn-Fletcher household was quiet, its inhabitants all asleep. At the foot of Phineas' bed was Perry, who was having a curious dream. It involved a kangaroo with its own seafood restaurant, a mysterious talking shoe, and, inevitably, Doofenshmirtz. He was about to reveal his latest maniacal plan, but whether it was one of his ludicrous or dangerous ideas, Perry wouldn't find out.

The repeated beeping of his watch echoed into Perry's ears. His eyes flew open. In one smooth motion, he both donned his fedora and glanced at the boys, confirming they were undisturbed. It was only then that he directed his attention to the wrist communicator.

"Good morning Agent P," Major Monogram whispered. "We're sorry to wake you at this hour, but we've got an urgent situation with Doofenshmirtz. Our source-"

"That's me!"

"Quiet, Carl!"

Perry turned around quickly as Ferb stirred in his bed. Perry paused in dead silence. A few tense moments passed, but Ferb rolled over and continued snoring lightly. Perry breathed a sigh of relief and made his way out of the room. It was evident they would be asking him to perform an early mission and according to the time, the brothers would be awake soon, so for his cover as a mindless semi-aquatic mammal to stay secure it would be safest to get clear of the family.

"As I was saying before being so rudely interrupted," Major Monogram continued as Perry closed the door. "Carl has been monitoring Doofenshmirtz."

"He's been working frantically on a new Inator all night," Carl explained. "Obviously this means trouble, so find out what he's building and put a stop to it."

Perry saluted and the transmission ended. He then rushed off with his usual speed and efficiency towards his bespoke hover car, his ride to Doofenshmirtz's building. Over at OWCA Headquarters, Major Monogram looked sternly at his intern.

"Carl! What have I told you about taking my line in front of the operatives?"

"Sorry sir."

*Doofenshmirtz Evil Incorporated!*

*In the morning*

The jingle played softly as Perry neared the building. It was still early and so hover car parking was thankfully easy to find. As Perry prepared his equipment for the upcoming job, he wondered what kind of scheme Doofenshmirtz was preparing today. Perhaps he would reveal his deep-seated hatred for bow ties, or launch a plot to enslave all of the senior citizens of the Tri-State Area. It may even be the other way round; Perry wouldn't put it past Doofenshmirtz to create an army of evil bow ties or an evil Senior Citizen Away-Inator. Perhaps that's what made going to thwart him so fun. That and crashing through windows, Perry thought, as he crashed through a window.

Doofenshmirtz turned to face him as he heard the shattered glass and falling debris. "Ah, Perry the Platypus, how interesting," he said slyly, as he pushed the button on the remote he was holding. Before Perry could react, he was trapped by a giant mechanical arm that grabbed his waist and lifted him slightly into the air. "And by 'interesting' of course I mean completely, er, 'resting' I guess? I suppose that doesn't really work... eh, it'll come to me.

"Anyway, you may be wondering what I've been working on all night. Well, it all started yesterday when you thwarted my evil plans for like, the thousandth time. I started wondering whether I had the right evil qualities to take over the Tri-State Area. And then it hit me! I should be focusing on making myself the natural leader of the Tri-State Area by using my latest invention. Behold: the Take Over the Tri-State Area-Inator!"

There was a moment or two of awkward silence as Doofenshmirtz stood in the dramatic pose he'd built up to over his monologue. Perry looked at him quizzically.

"Wait, where is it? Bear with me, Perry the Platypus, this remote doesn't always work... there! Now you can behold!"

The floor slid apart. Dramatic chords sounded as the new Inator rose to full height. Its cold steel plating were metallic and had razor-like edges, making it look deadly and efficient. It sent a foreboding chill ran down Perry's spine, but he tried to shake off the feeling. After all, whatever danger the Inator posed, Perry was confident he could neutralise it.

It was time to act.

Doofenshmirtz was tapping away at the TOTSAI which began to charge up, humming ominously. Meanwhile, Perry's hands were free and he took his whistle set from inside his fedora. Sure enough, the 'Komodo Dragon' whistle was in its place. Smiling, Perry blew it, the strange sound making Doofenshmirtz jump and spin around. At the sound of the call, a figure came parachuting down through the roof of the building.

"Oh no! It's Special Agent K!" Doofenshmirtz exclaimed as the giant green lizard landed on him. "Arrrrrgh!"

The remote fell out of Doofenshmirtz's hand and clattered onto the floor towards Perry's dangling feet. Stretching, he pushed the button which released the trap. Doofenshmirtz had just fended off Special Agent K when Perry leapt at him with a punch that sent him staggering backwards. Doofenshmirtz grabbed a wrench and swung it but Perry blocked with a pair of nun-chucks, taking the wrench out of Doof's hands in the process.

"Hey, where did you get those?" Doofenshmirtz protested. "It's like they just appeared out of convenience! That's lazy writin-" Before he could finish, Perry had leapt up to deliver a painful kick to the face, sending Doofenshmirtz crashing into the TOTSAI.

"Oh poo," Doofenshmirtz sighed, as the machine started to shake violently. "Well, here it comes..."

Perry was leaving on his glider as the machine exploded at Doofenshmirtz Evil Incorporated. Perry listened for and heard Doofenshmirtz's cry of 'curse you Perry the Platypus!' that inevitably followed a successful thwarting. Perry smiled; he was already thinking about what he would do with the brothers for the rest of the day.

He couldn't have foreseen what was about to happen.

The fabric of space-time and the Mysterious Forces of the Universe work in ways undecipherable even to those that seek to understand it. For whatever reason, the single green beam fired from the TOTSAI before its destruction would travel towards the co-ordinates of a certain backyard at the time when a certain pair of brothers were outside planning their day...

"So what should we do, Ferb?" Phineas asked, as he leafed through their scrapbook of past adventures. "Got any ideas?"

"Well-"

It was then that the beam enveloped the boys, bathing the backyard in an emerald glow. It was a few moments before Phineas turned to his brother.

"Ferb?" he said slowly, "I think I know what we're gonna do today."