Hi everyone! This is my first Phineas and Ferb fanfic, so I hope you like it.

And to be warned, I've never been good at detail, but I try my best.

No flamers allowed! Criticism, sure, advice, yes, but not flames!

I hope you enjoy the first episode of Phineas and Ferb: Greatest Adventures!

Phineas and Ferb: Greatest Adventures

Episode 1a: Building for Amusement

It was a damp morning in Danville. They had just had a rainstorm, and the grass was dreary, as was the mood of the people. Except for the people on Maple Drive. They were acting like nothing had ever happened. At 7:30 in the morning, right on time, Phineas and Ferb wandered downstairs for some breakfast.

As they were served pancakes and bacon, Phineas started to have some thoughts.

"Hey, Ferb, why do you think everybody is so quiet today? It seems like something brought their moods down. I wonder if there's something we can do about it." Ferb immediately sensed his stepbrother's thinking and brought out three blueprints.

"What have we got?" Phineas picked up the first plan. "The mix-and-mingler? Nope, we've done that already. Remember, when we tried to cheer up Candace? What else?"

Phineas glanced at the second blueprint on the wooden table, while Ferb looked at him questioningly. "An entertainment center? Wait, that's our plan for Tuesday, see? It's on our calendar." Ferb took a look and nodded.

" And last, but not least, an amusement park. Well, Ferb. I know what we're going to do today."

Just then, Lawrence walked in the room. "Hey boys, what are you guys doing today?"

"We're building an amusement park! We want to cheer up everybody in Danville." Phineas explained.

"Excellent, boys. Have fun. Your mother and I are going to the antique store. We have a busy day today."

"Okay, dad." Phineas answered. Ferb was still silent, but gave a thumbs up.

"Bye, kids!" Linda called from the driveway.

"Bye, mom!" Phineas and Ferb said at the exact same time.

Just then, Candace came downstairs. "Okay, you little twerps." She gave them an extremely stern look. "I'm arranging a date with Jeremy today, so don't bother me with your building and your tools and all that whatnot, got it?"

"No problemo." answered Phineas. "Hey. Where's Perry?"

Meanwhile, Perry had headed outside to his secret lair. He had thrown a basketball onto a seesaw at the playground, jumped on the other side, and been shot all the way to the house, where he entered through a drainpipe. Perry then appeared in his lair, and sat down in his chair. His boss then appeared on screen.

"Good morning, Agent P. Sorry to use the drainpipe, but we're doing some renovations, so that was the only entrance available." He glanced around nervously, as if he expected something bad to happen. "Anyway, Doofenshmirtz has been buying all the caramel apples in the Tri-State Area, which is a strange purchase because he also bought a strong laser that can destroy caramel." Monogram had a look like he was resenting something. "It's all very suspicious. And by the way, we're only assigning you to this case because it's Doofenshmirtz." Then the Major made a disgusted face. "I hate caramel. That's why there aren't many sweets in the agency." He sighed and shook his head. "Anyway, that's all, Agent P, so get going!"

Perry saluted his boss, raced over to his hovercar, and ejected through the sewer, on his way to stop Doofenshmirtz.

Phineas and Ferb, down below in the yard, were discussing plans for the amusement park. "Ferb, the Ferris wheel should go next to the rollercoaster." He pointed over to a spot on the east side.

"And the waterslide needs to be across from the log flume, over there." He then pointed at the northern side. "And…"

"Hey, Phineas." Phineas looked up and saw Isabella standing there. "Whatcha doin?"

"Ferb and I are building an amusement park, to increase the mood of the people of Danville. Wanna help?"

"Sure." Isabella nodded to him. "I'll get the Fireside Girls and meet you back here in an hour."

"Excellent." Phineas replied. "Hey, while you're at it, can you pick up a shipment at the Old Abandoned Old Abandoned amusement park?"

"Sure." Isabella nodded to him. "What is it?"

"It should be the Enterprise and the Skydiving Simulator." Phineas answered.

"Wow. Phineas, you're projects are so big." Isabella swooned.

"Thanks. Can you get going now?" Phineas looked nervous. "I hate being bossy, but sometimes, it's gotta be done."

By that time, he realized that Isabella had already left. "And…I'm alone now. Great. Ferb, do you need the spare blowtorch? I think you dropped that one on the Twist and Shout." Ferb nodded from up above.

"Okay. I'll send Baljeet to get it. He'll be here soon." Ferb nodded again and got back to hammering down tracks.

Doofenshmirtz Evil Incorporated!

Perry the Platypus used his sticky plungers to climb the building, then jumped through and broke a window. Immediately, handcuffs came down and cuffed him, chaining him to the wall.

"Ah, Perry the Platypus. How unexpected. And by unexpected I mean…Uh."

Perry stared up at him, confused. What was up?

"Oh, Perry the Platypus. Don't look like that." Doof stared at him. "I came in a little late with my line. Sorry."

Doof took out a tape recorder. "Note to self, start ordering evil cue cards."

Perry was staring at Doof, about to burst in laughter, when the platypus received a glare from the evil scientist. "What? Don't look at me like that! I mean, you're the one trapped, not me. Ughh. Why are these things so difficult?"

"Anyway, back to business." Perry received another look. "I'm sure you've heard that I'm out to destroy caramel apples. Well, I present to you…"

Doof turned around and pressed a red button on his remote. "The Caramelinator!" When Doof saw Perry staring at him again, he started to get angry. "Okay, time for the backstory. There is always one."

Doofenshmirtz Scarring Backstory!

"Apparently the backstories also adapted my evil jingle. It's nice." Doof announced. "Anyway, here it is."

"When I was a boy, my family loved to go to carnivals. We went every month, to the fair. And every time, I got a caramel apple." The picture showed Doof skipping happily as a young boy.

"The first time I went, nothing happened. I ate my apple in peace." It showed Doof eating a caramel apple.

"But the second time, the bully stole it! You remember that backstory, right?"

"And the third time, the birds ate it!"

"The fourth time, I couldn't afford one!

"The fifth one, I ate it and then puked on the rollercoaster!

Doofenshmirtz Back in the Present!

"So, Perry the Platypus. In revenge, I shall destroy every caramel apple in the Tri-State Area! Mwahahaha!"

Perry gasped in shock, because his owners were hosting a carnival. But how could he escape? Then he remembered: the saw in his hat. He started scheming and went to work.

Meanwhile, Candace was in her room, trying to arrange her date with Jeremy.

"Let's see, a romantic walk in the park! No, we've done that. A Italian dinner? No, that's Friday night. What can I do?"

Suddenly, she hear the cars of a rollercoaster. She was about to scream, but then she saw the Ferris Wheel, and she knew what her date was going to be.

Down below, however, things were going well. Baljeet and Buford had arrived, and everything was in place except the Enterprise and the Skydiving Simulator. Just then, Ferb's phone rang.

"Hello? Ferb?" It was Isabella. "Great. It's you. I know it is because you're silent. Okay, we're on our way, and should be there in ten minutes. You can open up the park, if you want."

Ferb nodded and hung up. He winked at Phineas, and he opened up the gates. The crowd rushed in and immediately started heading towards the rides.

Ten minutes later, Isabella and the Fireside Girls arrived, and immediately rushed in and began to work. An hour after that, the rides were ready to go.

Then, Isabella heard Ferb play the trumpet, and Phineas walked over.

"Time for a musical number! Everyone, help us out!"

Disco music began to play, and Phineas groaned. "Rock style, if you would. Disco's next Sunday."

Ferb nodded and changed. The guitars began to play a chord, and Phineas started to sing.

When You're Down- Phineas and Isabella

Phineas: What do you do when you're down, and you need to get out and move.

Isabella: You go outside and what you decide is that you get to groove.

Both: When you're down, you gotta get up, and then you'll be alright. Cause when you start, you cannot stop, and you'll be partying into the night.

Phineas: When you're down, in a really bad mood, you stand up and say "Okay!"

Isabella: When you're down, you feel blue, and you gotta feel the other way.

Both: When you're down, you gotta get up, and then you will see what's true. Cause when you stand, and you realize it's grand, you'll be the opposite of blue.

Phineas: You gotta get up! (Isabella: Gotta get up)

Phineas: When you're down! (Isabella: When you're down)

Both: Or else you'll face the blue, and that won't be good for you. So whatcha gonna do…

Both: Get up!

"Great job, guys!" Phineas said. "Good musical number. I'll put that on the list."

Just then, Gretchen and Ginger walked over. "Okay, we have a request from Candace for a romantic ride on the Ferris wheel tonight."

"I guess we can do that." Phineas looked at Ferb.

"You gotta to do what you gotta do." Ferb replied.

"Great answer. Ferb, I know what we're gonna do tonight."

Meanwhile, back with Perry…

He had escaped from his trap, and was about to leap onto Doofenshmirtz.

"Hahaha! Perry the Platypus, you are too late! My inator has been activated! Take that!" He then leaned over onto the inator and hit a blue button.

"Oh, no!" Doof looked panicked. "That was the Wildfire button! It fires all the lasers at random targets! Who knows what destruction that will cause!"

Meanwhile, Perry used this distraction to leap onto Doofenshmirtz, who fell over. "Perry the Platypus! I shall crush you!" He whipped out a butter knife, while Perry whipped out a sharp fork, and they began to duel.

The lasers, however, had hit every ride in Phineas and Ferb's amusement park except the Ferris wheel, which was good because a date was about to occur.

Doof was losing greatly, because his butter knife had been knocked off the building. Perry saw the final laser was aimed directly at them! Perry jumped off the building, and glided away.

The part of the building where he just was exploded, and Perry heard a weak voice call out "Curse you, Perry the Platypus! And backfiring inators, too! Man, those are annoying."

Back at the Flynn-Fletcher household, Candace and Jeremy approached the Ferris wheel.

"Right this way, please." Isabella appeared to lead the way, and the couple sat down on the wheel. Ferb yanked the lever, and slowly, the wheel began to rotate. Candace and Jeremy were smiling at each other, holding hands, and all that stuff. Phineas then had an idea.

"Isabella…do you wanna ride the wheel with me?" Phineas asked shyly.

"Yeah, sure! That's cool. Let's do it." Isabella replied.

"Hey, Ferb! Gotta handle things yourself. Isabella and I are going for a ride!"

The two of them entered the wheel, and started riding, they were leaning towards each other when a helicopter appeared.

Phineas looked up. "Who are you?"

"Hey, boys. My name is Chad Grossman, and I'm an owner of a theme park nearby. Can I have your Ferris wheel?"

"Sure. It's free. Everybody off!" Phineas answered.

The four of them exited the Ferris wheel, and Chad threw a grappling hook and hitched the Ferris wheel, and they flew away, just as Linda and Lawrence arrived, and Perry appeared. "Oh, there you are, Perry."

Linda appeared in the yard. "Did everybody have fun today?"

"Yeah!" everyone shouted, including Candace and Jeremy, surprisingly.

"Well, who wants cookies and milk?" Everyone raised their hands, and entered the house. Perry chattered and followed them. And another day was done.

So that's it. What do you think?

Well, if you review, remember: no flames!

Okay, that's all I have to say.

Expected Update: Today, tomorrow, sometime this week. I wrote this chapter in a night.