hA/N: Hello, people of FanFiction! I am here with a new story. As you probably saw in the summary, it is a Harry Potter/Phineas and Ferb crossover. It takes place during Sorcerer's Stone in the HP timeline and… Well, I don't know where it could fit in the P&F timeline! Does P&F even have a timeline? Yeah, didn't think so. And yes, there is going to be a whole series of them, from Sorcerer's Stone to Deathly Hallows. And now for the disclaimer:

yoneld: Do I own Harry Potter?

Harry: Well…

yoneld: What makes you think I do own Harry Potter?

Harry: Gred and Forge's distinct awesomeness and Umbridge's distinct toadliness?

yoneld: No, these are the reasons Gred and Forge are my favorite characters and Umbridge is my least favorite. If I owned the series, do you think Fred would have died and Umbridge would not?

Harry: Touché.

yoneld: And do I own Phineas and Ferb?

Phineas: No. No, you don't.

yoneld: Yeah, didn't think so.

A/N: And now for the crossover:

Key:

Bold text is the name of the P&F character that is speaking.

Bold and underlined text is the name of the HP character that is speaking.

Underlined text is a song.

Underlined and italic text is writing on things.

Italic text (not as part of a line) is captions.

There's a hundred and four days of summer vacation/And school comes along just to end it/So the annual problem for our generation/Is finding a good way to spend it/LIKE MAYBE:/Building a rocket or fighting a mummy/Or climbing up the Eiffel Tower/Discovering something that doesn't exist -

Phineas: Hey!

Or giving a monkey a shower/Surfing tidal waves, creating nano-bots/Or locating Frankenstein's brain -

Phineas: It's over here!

Finding a dodo bird, painting a continent/Or driving your sister insane -

Candace: Phineas!

As you can see, there's a whole lot of stuff to do/Before school starts this fall -

Phineas: Come on, Perry!

So stick with us 'cause Phineas and Ferb are/Gonna do it all/So stick with us 'cause Phineas and Ferb are/Gonna do it all.

Candace: MOM! Phineas and Ferb are making a title sequence!

Phineas and Ferb and the Sorcerer's Stone

~Breakfast at the Flynn-Fletcher home~

Linda: So what are you all planning on doing today?

Phineas: Well, there's this book series you bought us last week. Ferb and I are going to go into it.

Linda: What do you mean?

Phineas: Oh, you know, we're going to build something that lets us go into it and take part in the events in the book.

Linda: What an active imagination. *chuckles*

Candace: They're really going to do it, Mom.

Linda: Oh, give it a rest, Candace.

Candace: But they are. Every day they build something. But then when you get home, it magically disappears.

Linda: You all have such wonderful imaginations. Well, your father and I are going to run some errands. Come on, honey. *leaves*

Lawrence: *leaves*

Candace: *runs outside* Mom! Wait!

Linda: What, have they already built it?

Candace: No. No, they haven't. But while you're gone, I'm in charge, right?

Linda: Well, why would anyone need to be in charge?

Candace: Well… *pauses to think about it* What if giant chessmen crush the house?

Linda: If that happens, you're in charge.

Candace: Yes! *goes in* Guys! I'm in charge. You know, conditionally.

Phineas and Ferb: *stare blankly at her*

Candace: Carry on. *leaves*

Phineas: Well, we can't be in the book alone. We need to invite people.

Ferb: *pulls out a list*

Phineas: That's it! Ferb, I know what we're gonna do today in addition to the other thing we were gonna do today.

~A few minutes later~

Phineas: Ferb, I know who we're gonna invite today.

List: Baljeet, Buford, Candace, Isabella, Jeremy, Stacy

~Meanwhile, in Candace's room~

Stacy: You know, Candace, if you weren't so obsessed with busting your brothers, I bet Jeremy would spend more time with you.

Candace: But they're always up to something and I just can't get Mom to know about it!

Phone: *rings*

Candace: Hello?

Jeremy: Hey, Candace.

Candace: Oh, hi, Jeremy.

Jeremy: So, I was thinking… do you want me to come over to your house later?

Candace: Wait just a second, Jeremy. *covers phone* AAAAAAAAAAAAAAAAAAAAH! *uncovers phone* Why, yes. Yes, I do.

Jeremy: Great! So, I'll see you in like half an hour. *hangs up*

Candace: AAAAAAAAAAAAAAAAAAAAAAAAAAH!

Stacy: AAAAAAAAAAAAAAAAAAAAAAAAAAH!

Candace: Oh my God, I can't wait… Wait a second… What is going on out there?

~In the backyard~

Isabella: *comes in* Whatcha doin'?

Phineas: Hi, Isabella! We're making the Book-Enterer 3000.

Isabella: What does it do?

Phineas: When it's done, it should let you go into a book.

Isabella: Cool! Can I come with you?

Phineas: Yes. Yes, you can.

Buford and Baljeet: *come in*

Phineas: Hi, Buford. Hi, Baljeet.

Baljeet: What are you doing?

Phineas: We're going to go into a book.

Buford: Books are for nerds.

Phineas: We're not going to read it! We're going to be a part of it.

Baljeet: Sounds fun.

Buford: Oh, well…

Phineas: Everything going okay there, Ferb?

Ferb: *thumbs-up*

Phineas: Great. Hey, where's Perry?

~Where's Perry?~

Perry: *puts on fedora, looks right and left, then goes into the bathroom and flushes himself down the toilet. He lands in his lair*

Monogram: Good morning, Agent P. Doofenshmirtz has bought the entire Harry Potter series. We need you to find out what's going on and put a stop to it. Good luck, Agent P.

Perry: *salutes and leaves*

Doo-be doo-be doo-ba/Doo-be doo-be doo-ba/Doo-be doo-be doo-ba/Doo-be doo-be doo-ba/Agent P!/He's a semiaquatic egg-laying mammal of action/His furry little flatfoot will never flinch from a fra-ee-a-ee-ay/He's got more than just mad skill/He's got a beaver tail and a bill/And the women swoon whenever they hear him say:

Perry: Grr.

Women: *swoon*

He's Perry!/Perry the Platypus!

Monogram: But you can call him Agent P.

Perry!

Monogram: I said, you can call him Agent P!

Agent P!

Perry: *goes in through the front door*

Doofenshmirtz: What's this? A platypus?

Perry: *pulls out fedora*

Doofenshmirtz: Perry the Platypus! Well, you are too late. *traps him in a copy of Harry Potter and the Order of the Phoenix* Behold, the Bookinator!

Bookinator: *has the creepy inator music with it*

Doofenshmirtz: You see, Perry the Platypus, I read this new series that is really in right now, and I thought I could help this Voldemort person. I know, I know, he let this Potter kid kill him in the last book, but it never hurts to have one more follower! And after Voldemort takes over Britain, I will use what he taught me to take over the Tri-State Area! *takes out remote and presses button*

Bookinator: *opens a portal to Hogwarts during an unspecified Quidditch match*

Doofenshmirtz: Wait, this isn't how the book begins… *turns off Bookinator, flips to page 69 and turns the Bookinator back on*

Bookinator: *opens a portal to the Leaky Cauldron*

Doofenshmirtz: Goodbye, Perry the Platypus! The next time you will see me, I will be the ruler of the Tri-State Area! *goes through portal*

~And in the Flynn-Fletcher home~

Stacy: Forget your brothers, Candace, Jeremy should be here anytime now!

Jeremy: *rings doorbell*

Candace: *opens door* Oh, hi, Jeremy.

Jeremy: Hi, Candace. Let's go to the backyard.

Candace: But Phineas and Ferb -

Jeremy: I know, they set this up.

Candace: What?

Jeremy: *scratches his ear* Well, they called me earlier today and asked me if I wanted to come with you into some book. They said it'll be fun.

Candace: Well, okay then.

Stacy: Wait a moment! Can I come, too?

Candace: Well, if you want to.

Stacy: Great. *they all go to the backyard*

Phineas: Well, Jeremy and the girls should be here by now…

Candace, Jeremy, and Stacy: *come out to the backyard*

Phineas: Ferb, open the portal at page 69.

Ferb: *takes out a remote, flips the book to page 69, and presses the button*

Book-Enterer 3000: *opens a portal to the Leaky Cauldron*

Phineas, Ferb, Isabella, Baljeet, Buford, Candace, Jeremy, and Stacy: *go in*

A/N: How do you like it so far? I'll be posting this once a week on Wednesdays or weekends. And by weekends, I mean Friday/Saturday, because that's the Israeli weekend. Also, if anyone is willing to beta this story, please PM me about it.

Review or you will be trapped in a copy of Harry Potter and the Order of the Phoenix.