After Linda loses her lucky guitar pick inside a wall in the house before she's due to play a gig with her jazz trio, Phineas and Ferb decide to build a molecular scrambler so they can go inside the wall and retrieve it. Meanwhile, the city of Danville is unveiling a statue of Mayor Roger Doofenshmirtz in his honor for Mayor Day, and Dr. Doofenshmirtz plots to destroy it using an inator installed on the back of his flatbed microbus.
Tropes:
- Brick Joke: Earlier in the episode, Linda forbids Candace from getting a pink streak in her hair. Later, when Candace gets stuck in a port-a-potty door thanks to Phineas and Ferb's scrambler, Linda thinks this is a fashion choice saying, "And just because I won't let you get pink hair, you don't have to wear some weird door. The trends these days..."Buford: I'd wear a door. Heck, I'd even wear a window if it fit!
- Chekhov's Gun:
- Interestingly enough, the boys' invention. When the kids head to the festival, they leave the scrambler behind on the kitchen table. Candace picks it up and takes it to the festival to show Linda. When she gets to the festival, she trips over a rock, gets herself stuck in a port-a-potty door thanks to the scrambler, and the scrambler goes flying. It lands next to the kids (who are pumping up one of Isabella's bike tires) and gets jammed open... just as a steamroller from Lawrence's auction is rolling down the hill towards them. The scrambler allows the steamroller to pass directly through them, saving their lives.
- The blast from Doofenshmirtz's inator causes the port-a-potty door to disappear just before Jeremy arrives, sparing Candace from any further embarrassment.
- Companion Cube: Doofenshmirtz carries along a crude homemade bobblehead Perry the Platypus on his way to crash the Mayor Day festivities, discussing his evil plan to it as if it's Perry himself.
- Failed a Spot Check: The gang fails to notice when the steamroller is about to roll directly in their path (except for Baljeet, who notices the inside of the steamroller as it passes through them).
- Flash In The Pan Fad: Two: the country's sudden interest in 18th century steamrollers from England, and a new trend where girls get a pink streak in their hair.
- Funny Background Event: When Candace gets a port-a-potty door stuck to her, Balthazar (the kid in the ballpit) passes by and gives her a high five.
- Good Luck Charm: Linda has lucky guitar strings, lucky underwear, and a lucky gold guitar pick, while Lawrence has a lucky butter knife.
- Hypocritical Humor: Candace mocks the 18th century steamroller trend and immediately asks Linda if she can get a pink streak in her hair because "everyone's doing it".
- At the same time, Candace claims that getting a pink streak in her hair will show her individuality.
- Intangibility: The boys build a device that when activated, scrambles their molecules and allows them to pass through solid objects.
- Ironic Echo Cut:Phineas: Ferb, it looks like everything worked out for everyone today.
Cut to Doofenshmirtz, standing dejectedly on the remains of his microbus.
Doofenshmirtz: I can't believe nothing worked out for me today. - The Key Is Behind the Lock: Doofenshmirtz accidentally locks his keys inside his flatbed micro-bus.
- Left the Background Music On: The song that plays when the gang tries out the new device turns out to be from a concert done by Love Händel (with Bobbi Fabulous singing lead instead of Danny), which the gang visits.
- Mirrors Reflect Everything: Doofenshmirtz fires a laser beam from his inator that bounces across several mirrors in a House of Mirrors and eventually hits the door that Candace gets stuck in.
- Noodle Incident: When the gang almost get run over by a rolling steamroller, they are oblivious to the orb making it pass through them. Baljeet reacts like this:Baljeet: Did anyone else just see the inside of a steamroller?
Buford: How do you know what the inside of a steamroller looks like?
Baljeet: I have a life outside of you. - Not Helping Your Case: Perry notices the bobblehead of himself that Doofenshmirtz made, to which Doofenshmirtz remarks, "What? That's an- It's an arts and crafts project. I've got a life outside of you!" Perry just stares sarcastically at the reply.
- Ridiculously Fast Construction: Lampshaded by Baljeet when Isabella's tire bursts and the gang tries to fix it:Baljeet: You can build a rollercoaster in a day, but it takes you 12 minutes to pump up a tire?!
- Special Guest: Tom Wopat and John Schneider from The Dukes of Hazzard play the Wilkins brothers, Orville and Wilbur, respectively.
- Teetering on the Edge: After Doofenshmirtz's Inator destroys the front end of his microbus, Doof and Perry are left standing on the flatbed, which is sitting over a cliff. Perry then jumps off the flatbed... causing Doofenshmirtz to roll down the cliff uncontrollably.
- Time for Plan B: After the first inator gets destroyed, Doofenshmirtz reveals another inator for plan B... which he then promptly destroys. He then reveals Plan C: the Be-Gone-Inator.
