Phineas and Ferb Wiki
Phineas and Ferb Wiki

However, while reaching for his quill, the Mayor of Gimmelshtump accidentally turned 90 degrees. Since showing your side to another is considered a Stumblegimpian insult, the Mayor of Stumblegimp was forced to follow tradition.

— Narrator

Motivated by a movie with a strong heroine and also sibling-rivalry, Candace and Stacy feel empowered to team up against rival groups and compete in Phineas and Ferb's Ultimate Obstacle Course. Across town, Doofenshmirtz plans to humiliate his brother, the Mayor, by using his 90 Degree-turn-inator on him so that he will accidentally insult the Mayor of Stumblegimp and be forced to perform the shameful "Dance of Contrition" to make amends.

Episode Summary

Phineas and Ferb are trying to decide with to do with leftover building materials that remained after making their Backyard Hodge Podge. Buford and Baljeet then come in and Buford points out it's like an obstacle course. The boys then decide to make an obstacle course. Buford then asks "Where's Perry?" so that they don't break into song.

Perry opens up an passage way to his lair then goes down and receives word from Major Monogram that Doofenshmirtz's building is turning. After Perry leaves, Monogram breaks into song with other agents in the background.

Candace and Stacy discussing the movie

Candace and Stacy have just exited a movie theatre where the film Gluttony Games was showing, and discuss it until they get to the Flynn-Fletcher backyard, which has been transformed into said giant obstacle course. Just as Candace prepares to bust her brothers, Stacy says she wants to win the trophy, leading to a flashback with her mom and her sister Ginger collecting trophies on a shelf, whom the latter has more trophies than her sister. After slacking off, Candace states that she's all in on the course.

Meantime, at Doofenshmirtz Evil Incorporated, the building continues to turn 90 degrees, and Perry is trapped by a welcome mat and hears about Doof's plan to insult his brother Roger by using his 90-Degree-Turn-Inator to insult the visiting mayor of Stumblegimp by showing an old newsreel film of the events in Drusselsteinian history that led to a 50-year war between Gimmelshtump and Stumblegimp, which lasted until the Gimmelshtump mayor did the Dance of Contrition to end the war. Doof's plan is to aim the 90-Degree-Turn-Inator at his brother, forcing him to do the same dance of the 1940s as it was done in the 1600s.

Back at the obstacle course, Phineas introduces Candace and Stacy as the last team. Much to Stacy's surprise, they have to compete with Ginger and Isabella. Ginger gives Stacy the thumbs up sign while Stacy gives the "I'm watching you" motion to Ginger instead (who is on the green team with Isabella), who thinks it's a code meaning "I love you sis". Phineas tells everyone to watch out for the giant worms as the challenge starts, and Buford and Baljeet are immediately swallowed by one, eliminating them for the rest of the race. The remaining teams begin to land on the "beach" and have to cover from the water balloons coming their way.

At City Hall, Roger greets Mayor Chickenen, mayor of Stumblegimp, as Doofenshmirtz spies on them. He activates the -inator causing Roger to turn, which insults Chickenen who declares war. To make amends for this, Roger asks Melanie to get the Dance of Contrition team out as fast as she can. Doofenshmirtz prepares for humiliation, but instead of the usual dance, Roger has everyone do a different version of the dance with disco music and a different dance style, something which even Chickenen enjoys. Confused by this, Doofenshmirtz decides to go down to find out, thinking that he should ask Norm what he did with his binoculars as he didn't use them in the first place.

Ginger and Isabella are still out in front, and Candace and Stacy have to watch their step as there's mud (which was Baljeet's suggestion). When Candace and Stacy try to land on a platform, it blocks them and they hit the mud, which Phineas says is good for the skin. As Candace and Stacy get dried off, Isabella and Ginger try to get over a bridge but get blown away by a fan. Candace and Stacy are in the lead again, only to get hit by pies. As a result, Isabella and Ginger take the lead once more.

Doofenshmirtz runs up to Roger and Chickenen, demanding to know why the dance was different from the old version. It was then Chickenen explains to Doofenshmirtz that the old version hasn't been done since the 1940s when they made the newsreel about the 1600s, and things have changed ever since.

The obstacle course is almost over, and Isabella and Ginger are still in the lead. Both teams have to run on a log of corn, but suddenly it pops, causing Isabella and Ginger to fall off, leaving Candace and Stacy the last ones standing, and they win. Then, they get slapped by a gorilla hand into the mud with the other team, and are presented with a trophy. Ginger reveals to Stacy she was only winning trophies to impress her, as she's the best sister she ever had. Suddenly, the giant worm with Buford and Baljeet in it comes by, and Buford steals the trophy from Candace, stating giant worms can do whatever they want.

Instantly, Candace reverts to busting mode and stomps into the kitchen covered in mud. She angrily asks Linda if she can speak with her, much to her annoyance.

Back at City Hall, Doofenshmirtz gets accidently zapped by the inator, which is found very rude by Chickenen, who then slaps him with a sock, much to Roger's shock. An angry Doofenshmirtz tells Chickenen to give it a rest and leaves, realizing that he accidentally left it in "random fire" mode.

Perry manages to escape his trap and hits the self destruct button on the -inator, causing it to explode, but not before firing one last ray which bounces off a plane to New York and hits a camera in the obstacle course, causing it to rotate and hit the pole containing the Jumbotron with the image of Phineas and Ferb resting under the tree on it. It slowly lowers to the ground, blocking the kitchen window view of the obstacle course, right when Candace tells Linda to see it. When Linda only sees the screen, she assumes only Phineas and Ferb are there and says hi to them. She tells Candace that her busting obsession is getting old and leaves, and Candace stutters slowly in sadness.


Read the transcript of One Good Turn.


End Credits

Last verse of the "Humiliating Stumblegimp Dance of Contrition".


Click here to view more images from "One Good Turn".
View the image gallery for "One Good Turn".

Running Gags

I know what we're gonna do today

Buford: Whoa, dudes, what's with all the junk in your backyard? It's like an obstacle course back here!

Phineas: That's it! I know what we're gonna do today!
Buford: What'd I say?
Phineas: You said, "obstacle course", of course!

Buford: Oh, I meant to say, "Chili cook off".

The "Too Young" Line


Ferb's Line/Hey, where's Perry?

Baljeet: Are you meaning to tell me we have never made an obstacle course this entire summer?

Phineas: Ferb?
Ferb: I'm filled with remorse
That we haven't, of course,
Even thought of building an obstacle course.
Phineas: Then let's build one and make it our new tour de force!
Ferb: That is a plan I can clearly endorse.
Phineas: Of course!
Baljeet: Of course!
Phineas: Of course!

Buford: Of course! I'm puttin' an end to this before it breaks into song! Where's Perry?

What'cha doin'?


Oh, there you are, Perry


Perry's entrance to his lair

Perry uses a rod to divine the OWCA location on a scale model of Danville, accidentally setting it on fire, and exits but not before extinguishing the fire.

Evil Jingle


Memorable Quotes

Major Monogram: Okay, he's gone. One, a-two, a-one-two-three

I am the the very model of a modern Major Monogram

I've information vegetable and animal and hologram
Phineas: Ladies and gentlemen, boys and girls, babies and slightly smaller babies, welcome to the Phineas and Ferb Ultimate Obstacle Course! The first team that makes it all the way to the end (you know, alive and stuff) will win this nifty trophy! So are you ready to get muddy?

Candace: That tears it! Those two are so—
Stacy: Hang on, Candace! We can win this!
Candace: Yeah, we ca—Wait, what?
Stacy: I want that trophy!
Candace: Why?
Cutaway to Dr. Hirano with Ginger putting up a trophy on display as Stacy watches.
Dr. Hirano: Very good, Ginger. We'll put it up here with the rest of your awards. I'm...still saving a place for your trophy, Stacy. You know, just in case.
Stacy: Uhhhhhhhhhhhhhhhhhhhhhhhh...
Cut back to Stacy and Candace.
Stacy: ...hhhhhhhhhhhhhhhhhhhhhhhhhhhh... Candace, we'd make an awesome team!
Candace: Alright, I'll do it!
Stacy: For the trophy!

Candace: And for whatever it was you were thinking about just now.
(Stacy looks at Ginger saying that she is watching her)

Isabella: What was that about?

Ginger: Oh, that's our secret code for "I love you sis"...I think.
Phineas: You know what they say: Giant worms can do whatever they want.
Phineas: Watch your step, ladies! That's mud down there! Baljeet's suggestion!

(Cut to Buford and Baljeet still inside the giant worm.)
Buford: Really?
Baljeet: I knew we would not make it that far.
(The worm chomps and swallows them.)

Buford: Well, not with an attitude like that!
Doofenshmirtz: (realizing he is looking through his hands) One day I gotta ask Norm what he did with my binoculars.
Ginger: Congratulations, Stacy!

Stacy: Ha! Now I'm like you! I have a trophy!
Ginger: But, Stacy, I won all those trophies just trying to impress you.
Stacy: Really?
Ginger: Yeah! You're the coolest big sister a girl could ever have! How can I compete?

Stacy: Well, I am pretty cool.

Background Information

To be added

Production Information

International Premieres

  • September 19, 2013 (Disney XD Poland)
  • September 27, 2013 (Family Channel Canada)
  • September 30, 2013 (Disney Channel Russia)
  • October 15, 2013 (Disney Channel Australia)
  • October 17, 2013 (Disney XD Germany)
  • November 17, 2013 (Disney Channel Latin America and Brazil)
  • December 8, 2013 (Disney XD Latin America)
  • December 15, 2013 (Disney XD Spain)
  • January 16, 2014 (Disney Channel Portugal)
  • January 27, 2014 (Disney XD Italy)
  • February 15, 2014 (Disney Channel Asia)
  • February 23, 2014 (Disney Channel Hungary)
  • November 30, 2014 (RCTI Indonesia)
  • April 13, 2016 (Disney Channel Poland)


  • Though this episode takes place the day after Backyard Hodge Podge, it's never explained how the invention was removed from the backyard. Also, it's unknown what happened to the obstacle course at the end.
  • The amount of mud on Candace changes one shot after another in the episode.
  • Linda should've seen the "Phineas and Ferb present" title on the jumbotron as well as the edges of it.
  • Linda should've gotten a little suspicious when she looked out the window and saw the jumbotron only to assume it's only Phineas and Ferb, as the tree was placed in the exact area of the window. Usually the tree is not in the window's sight.
  • The screen probably should have some reflection on it, making it obvious that it is not real. Also, their mom could have easily been able to tell that the screen is fake by looking at it from a different window.
  • Doofenshmirtz's building does not rotating anymore when he starts to shoot Roger with his 90-Degree-Turn-inator, although the effect might not last long enough. Also, Roger is only seen rotating few times at the beginning, and then he does not rotating anymore.
  • Linda should have heard the screen moving.
  • Phineas and Ferb actually have built an obstacle course before, their Super Skate Course of Doom from "The Beak", which had obstacles on it.
  • When Candace & Stacy and Isabella & Ginger reach the part of the course designed like a pinball machine both teams duck rafts are red where as Isabella & Ginger's was green before and after the pinball area.
  • In this episode it is implied that Stacy has never won a trophy. However up to the third season there are several times when Stacy is in her bedroom you can see a huge trophy (probably for speed skating due to the figure on top and the speed skate hanging from her bed) and four gold medals hanging on her wall. Also, the Paisley Sideburn Brothers poster changes to a Bettys poster.
    • It is mentioned in this episode that Stacy never wins trophies but she has trophies in her room in "Canderemy".

      Stacy's trophy


  • Phineas mentions the last time they used leftover parts from their past inventions, he even mentions making something besides hodge podges and art pieces. ("Bullseye!", "Backyard Hodge Podge")


  • One good turn deserves another - This episode's title is a reference to the old saying.
  • Raiders of the Lost Ark - Agent P uses a staff and headpiece to pinpoint O.W.C.A. headquarters in a replica of Danville, like Indiana Jones did in the city of Tanis to find the Well of Souls.
  • The Pirates of Penzance - After Perry leaves, Major Monogram sings a parody of the Major-General's Song from the Gilbert and Sullivan operetta.
  • The Hunger Games - The book and movie are parodied as "The Gluttony Games".
  • Monty Python and the Holy Grail - The start of the war between Gimmelshtump and Stumblegimp showing animals thrown via catapult comes from the 1974 film and its Broadway musical Spamalot.
  • Dune - The worm that eats Buford and Baljeet closely resembles the Arrakis Sandworm from the Dune books and films.
  • Commercials - When the Mayor of Gimmelshtump is seen splitting atoms, a disclaimer is seen saying "Dramatization: Do Not Attempt", which is often seen in advertisements whenever someone does a dangerous stunt.
  • Ultimate Obstacle Course - The challenges in Phineas and Ferb's Ultimate Obstacle Course are inspired by various physically-based game shows, including Wipeout, Ninja Warrior, American Gladiators, and Nickelodeon GUTS.
  • The taboo of showing one's side to a Stumblegimpian is a reference to the custom of many Middle Eastern countries, in which to show the bottom of one's shoe to someone is a great insult.


  • Candace willingly participates in one of Phineas and Ferb's big ideas again ("Got Game?", "Phineas and Ferb: Summer Belongs to You!", "Skiddley Whiffers").
  • Stumblegimp is a reversal of sorts of the land of Gimmelshtump.
  • Stumblegimp also sounds similar to "Stumbleberry Finkbat" ("Nerds of a Feather").
  • Second episode to show Ginger and Stacy as sisters ("For Your Ice Only"). Also the first time the Hirano family (Stacy, Ginger, and Dr. Hirano) are shown together.
  • Second time Candace gets hit with pies ("Let's Take a Quiz").
  • This episode takes place the day after "Backyard Hodge Podge", based on Phineas's dialogue.
  • Second time Doofenshmirtz uses a newsreel to explain his evil scheme. ("The Lemonade Stand")
  • The pilot of the airplane says the plane is relocating to Alabama, Dan Povenmire's home state.
  • Third time Isabella has a bow on her helmet ("The Great Indoors", "Just Desserts").
  • Second episode to begin with "One Good". ("One Good Scare Ought to Do It!")
  • The Mayor of Gimmelshtump paints a "9" numeral over the word, "Neuf", which is French for "nine" and then says "Nein", which is German for "No".
  • Once again, Phineas and Ferb's big idea doesn't disappear. Since this episode takes place after "Backyard Hodge Podge", then this would be the second day in a row that the Big Idea doesn't disappear.
  • Second episode in which the song has two versions. ("Der Kinderlumper")
  • Third episode where Ginger was addressed by name ("For Your Ice Only", "Bee Story").
  • Ginger is the first Fireside Girl other than Isabella to play a major role in an episode.
  • This is the third time only a single Fireside Girl other than Isabella appears. The first two were Holly in "Comet Kermilian" and Gretchen in "Where's Pinky?".
  • If one looks closely, they can see Buford and Baljeet's team colors are, well-fittingly, black and blue.
  • This is another time Candace didn't interact with Phineas and Ferb. This is also the only time to date she doesn't see them in person.
    • In addition, Phineas and Ferb were only seen in person for the first 45 seconds of the episode.
  • The Aliki Theofilopoulos Grafft lookalike is seen again. ("The Mom Attractor", "Sipping with the Enemy", "Norm Unleashed")
  • The dress that the Gimmelschtump mayor wears when he jumps in a lake is the same dress Doofenshmirtz wears when he gets zapped by the ballgowninator in "Gaming the System".


designates a character that did not appear in this episode


"Love at First Byte"
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