Disclaimer:

I do not own Phineas and Ferb.

AN: This is my first fanfiction. Hope you like it!

Chapter 1

Stepbrothers Phineas Flynn and Ferb Fletcher were waking up on a bright new sunny day. "Good morning, Ferb! Good morning, Perry…Wait, where's Perry?" At this moment, a hatch opened right under the floor. "Hey, I've never noticed that before, let's check it out." Ferb just nodded. They went through the hatch and landed in Perry's lair. "Isabella, Candace, what are you two doing down here?"

"We have no idea." They said simultaneously. Then Major Monogram appeared on the screen.

"Hey there kids, my name is Major Francis Monogram. Your pet platypus is actually a secret agent and you're in his secret lair. He's…"

"Perry, a secret agent!" Candace interrupted. "I know weird things have happened here, but a secret agent animal. You've got to be kidding me."

"As I was saying, his nemesis has finally figured out how to keep him trapped so he can finally rule the Tri-State Area. You four are the only ones who can stop him and free Agent P, or Perry. You all need to find his building, Doofenshmirtz Evil Incorporated."

"How will we now if we've found out" asked Phineas.

"It's not hard to spot," Monogram answered. "It's a big purple building with Doofenshmirtz Evil Incorporated painted on the top in blue letters. Also, when you get near it, you hear his evil jingle. Good luck, you guys. Wait! We have a hovercraft for you guys! Carl, open it up."

As some dramatic music plays, they all see a hovercraft big enough for all of them. "Dramatic music, nice touch." Phineas said. "Come on you guys, let's go save Perry!"

"Doofenshmirtz Evil Incorporated!"

"Sounds like we're close." Phineas said as they heard the jingle.

"There it is!' Isabella said. "I think we should cut a hole in the roof."

After they landed on the roof, Phineas asked, "Hey Ferb, Did you bring a blowtorch by any chance." Ferb nodded and started making an opening in the roof. They ended up in what seemed like a normal hallway.

"Wow, this is easier than I thought it was going to be." Candace remarked as she was about to step forward.

"Wait," Isabella said as she pulled out a can labeled "Undo-Invisible Laser Spray" and sprayed it in front of them. Suddenly, a bunch of lasers appeared in front of them.

"Wow," Candace said, "Where do you even get 'Undo-Invisible Laser Spray'?"

"You know, I actually don't remember ever buying this before. Weird." Isabella answered. "I knew my gymnastics patch would come in handy sometime." She said as she got past the lasers and then jumped up to hit the de-activate switch.

The next set of lasers were set up like limbo sticks. "Oh, I can do this part. Remember, I won the limbo contest at your beach?" Candace said. So she did and jumped up to get the de-activate switch for that set. Now, they've finally made it to Dr. D's room. Since the door wasn't locked, they just walked in. Inside, they saw Perry in some kind of force field. Standing next to him, they saw a man in a white lab coat. It was clear that both of them were surprised to see them there.

"Man, I can't believe I forgot to lock the door again!" Doofenshmirtz said (From now on, I'm just going to call him Doof). "Perry the Platypus, are these your owners?" Perry nodded his head at this. "Oh man, it's already noon! I guess time flies when you're being evil. Hey kids, are you hungry? I've got some snacks in the kitchen. I have some fat free and whole grain granola bars because I'm trying to eat healthier. I'm having a real hard time doing that since I always have a craving for Almond Brittle. So I also have them. Love it!"

"Sure," the kids said

After their snack, "Alright, so where were we? Oh yeah, You'll never be able to free your pet!" Doof said. He picked up a button and said, "Prepare to be trapped just like Perry the Platypus!"

AN: If you liked this, please review and I'll continue this. Hope you like it. See you!