While Phineas and Ferb get the bubble machine ready, Isabella and the Fireside Girls set out to collect a key ingredient for the bubble solution. Meanwhile, Professor Poofenplotz is out to steal hairspray and Pinky the Chihuahua must stop her.

This episodes' events [[SynchronousEpisodes runs concurrently]] with the plot of the previous episode; [[Recap/PhineasAndFerbBubbleBoys "Bubble Boys"]].
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!!Tropes:

* BrickJoke: This episode explained how the Fireside Girls knew when to lean in the previous episode, and also why Linda had to remind Candace of the trash cans.
* ADayInTheLimelight: This episode is "Bubble Boys" told from Isabella's point-of-view.
* DaydreamSurprise: When Isabella asks Phineas "What'cha doin'?", he says he ''doesn't'' know what he's doing ignoring his feels for Isabella, then turns into a centaur and flies away with her. Turns out it was all an ImagineSpot Isabella was having while Phineas was asking her to get the maracanut tree sap for the bubble machine.
-->'''Isabella:''' I'm sorry! I was off in "Phineasland".
* DepartmentOfRedundancyDepartment: The old abandoned, old abandoned amusement park. It is actually ''called'' "The Old Abandoned Amusement Park", and now it's old and abandoned. Hence "old abandoned twice," as Isabella puts it.
* DisproportionateRetribution: Prof. Poofenplotz banishes a retail clerk to another dimension for [[BearerOfBadNews telling her that her favorite hair spray has been discontinued]].
-->'''Poofenplotz:''' How about I discontinue ''you'' from this dimension?!
* FaceShip: Prof. Poofenplotz gets around in her "Me-Mobile", a SpiderTank shaped like her head.
* FlagDrop: During the last two lines of "Fireside Girls Anthem", Isabella and the Fireside Girls stand in front of an American flag to match the patriotic feeling of the song.
* FreezeFrameBonus: The "I Just Saw a Cute Boy" patch can be seen briefly on Isabella's sash during the Fireside Girls song.
* GlassShatteringSound: A variation. When Professor Poofenplotz crashes into the amusement park and finds the Stiff Beauty hairspray, the resulting scream of joy is so high pitched that it brings down one of the amusement park rides, crushing the cans and dousing her entire body in hairspray.
* NoodleIncident:
** Millie says she earned a second "Help Thy Neighbor" patch when "I went back that afternoon after everyone else left."
** The other Fireside Girls remind Ginger of the one time they went to see what Baljeet was doing, and whatever happened wasn't worth the effort.
* PrecociousCrush: This episode establishes Ginger's crush on Baljeet.
* SesquipedalianLoquaciousness: Gretchen actually earns a "Saying a Word Nobody In the Room Knows" Badge for using the word "sesquipedalian".
* SingleTear: The hippie guru sheds a tear as he reveals all the maraca nut trees have been chopped down for hairspray.
* SmokeOut: The guru vanishes in a puff of smoke after he finishes guiding the Fireside Girls where to go. Gretchen points out that he's still there, just standing near the spot where he was.
* SpecialGuest: Creator/JuddNelson plays the hippie guru.
* SynchronousEpisodes: With "Bubble Boys". This episode shows how Isabella got the sap ingredient for the bubble solution.
* WingdingEyes: Phineas gets hearts in his eyes during Isabella's daydream.