After locating and retrieving the Amulet of Juatchadoon, adventuring archaeologist duo Ohio Flynn (Phineas Flynn) and Rhode Island Fletcher (Ferb Fletcher) set off to Central America to help Damsel in Distress Isabella find the Lost Temple of Juatchadoon and her missing mother. However, Dr. Doofenshmirtz has other plans for the amulet - to awaken the evil corn colossus to give him the power to destroy the world.
Tropes:
- Accordion Man: The Abominable Snowman crushes Norm, turning him into this. Being a cartoon, he recovers in the next shot, of course.
- Adventurer Archaeologist: Ohio Flynn, Rhode Island Fletcher, Isabella, and New Hampshire Garcia-Shapiro. Doofenshmirtz is an Evil Counterpart to them.
- Anachronism Stew: Candace says she smells a big story, "Either that or they haven't invented deodorant soap yet."
- Arson, Murder, and Jaywalking: Isabella is a Femme Fatale, Ingenue, Amateur Archaeologist, a Licensed Tile and Grout Installer (a girl's gotta make a living), and a certified Damsel in Distress. And she later adds Dirty Double Crosser when she ends up betraying Ohio and Rhode Island.
- Artistic License – History: This story takes place in 1914, however the punchline of the creation of the Panama Canal makes no sense as the canal was built ten years earlier in 1904.
- Big Entrance:
- Doofenshmirtz has a little light show as he stands atop a descending pillar with banners with the letter "D" unrolling behind him when he captures the group at the Lost Temple.
- Perry completely one-ups
Doofenshmirtz's entrance, blowing a hole into the temple room and walking in with a troupe of backup dancers as they sing his theme song, and then he frees everyone without missing a single dance cue.
- Bigfoot, Sasquatch, and Yeti: Ohio and Rhode Island, as well as Doof and Norm, are chased by the Abominable Snowman in a cave.
- Card-Carrying Villain: Parodied. Upon being called a dirty double-crosser, Isabella presents a card with "dirty double-crosser" written on it. Subverted because she only double-crosses Ohio and Rhode Island because her mother was being held hostage.
- Cutting the Knot: Twice. First Isabella breaks the case for the key to the temple door instead of solving the puzzle to unseal it, then during the fight with the corn collosus Ohio smashes the control amulet rather than learning how to control it.
- Da Editor: Linda is a newspaper editor for the Daily Tableaux in this story.
- Damsel in Distress: Isabella's 1914 counterpart is a certified damsel in distress.
- Elseworld: Transplants the Phineas cast into the year 1914 as Indiana Jones expies.
- Food Fight: One breaks out in the Rusty Pickaxe when the customers revolt over a lack of maraschino cherries.
- Fun with Acronyms: This timeline's version of Agent P is a member of the Secret Order of the Knights Without a Cool Acronym, or SOKWCA.
- Global Ignorance: Major Monogram thinks he's in Egypt because there are pyramids nearby.
- Glory Seeker: Though Ohio is similar to Phineas in many ways, one thing sets him apart: He's opportunistic and seeks fortune and glory.Waiter (Lawrence): Hello gents, what's your fancy?
Ohio: Well, fame, glory, money, and the preservation of semi-mystical historical treasures, but we'll settle for hot fudge sundaes. - I Have Your Wife: Doofenshmirtz holds Isabella's mother hostage to force her to betray Ohio and Rhode Island.
- Intrepid Reporter: Candace is a journalist who follows Ohio and Rhode Island for her scoops.
- "Just So" Story: Turns out this was the origin story of the Panama Canal.
- Left the Background Music On: Perry's theme in his Big Entrance is supplied by a troupe of backup singers.
- My Card: Isabella has a card for each thing she does for a living, rather similar to how in other episodes, she has a ludicrous amount of Fireside Girl patches.
- Popcorn on the Cob: The Corn Colossus drops into a fire pit, and Ohio says, "Get ready for some popcorn!" But when he emerges from the pit, he is still on fire. Ohio is surprised that he didn't pop. He finally pops when the amulet is destroyed.Ohio: Oh, now he pops! How does that make any sense?!
- Punny Name: The name "Juatchadoon" is a pun on Isabella's catchphrase, "What'cha doin'?".
- Raiders of the Lost Parody: This episode is an obvious Indiana Jones parody.
- A Rare Sentence: When Dr. Doofenshmirtz sicks the Corn Colossus on Perry the Platypus and his backup singers.Ohio Flynn: We've got to lead that corn colossus away from those backup singers!
Isabella: OMG, coolest sentence ever! Somebody write that down. - Related Differently in the Adaptation: Candace is merely a reporter for a newspaper and shows no relation to Ohio and Rhode Island. Also, Linda is Da Editor and not her mother. Lawrence appears as a waiter with no direct relation to Ohio and Rhode Island.
- Running Gag: Perry wearing a fez despite not being in Egypt is pointed out multiple times.
- Sarcastic Clapping: This is how Doofenshmirtz makes his entrance. When he and Norm get trapped in the snow, Norm attempts this.Doofenshmirtz: Way too soon for a Call-Back, Norm.
- Stating the Simple Solution: When Ohio Flynn is trying to think of a way to get a key out of a glass case, Isabella suggests "Or, we could hit it with a rock!" Later in the episode, Ohio suggests the same idea to destroy the amulet that controls the Corn Colossus.
- Travel Montage: Wouldn't be an Indiana Jones parody without a map sequence. There are several, with the last one just going from one side of the Pacific Ocean to the Caribbean Sea. The boat's captain (played by Baljeet) explains there is no way to get to the temple by boat.
- Uncertain Doom: Doofenshmirtz and Perry's 1914 counterparts, still busy arguing, don't appear to make it out of the Lost Temple before it collapses on top of them.
- Variations on a Theme Song: "He's a semiaquatic egg-laying mammal of action!" ("In a fez!") "He's got more than just mad skill! / He's got a beaver tail and a bill!" ("And a fez!")
- Whole-Plot Reference: The episode as a whole is one to Indiana Jones.
- The title is a reference to Indiana Jones and the Temple of Doom.
- Phineas, Ferb, and Vivian (Isabella's mother)'s 1914 counterparts are archaeologists who have an American state as their first name (Ohio, Rhode Island, and New Hampshire respectively).
- Upon entering the temple, the gang is chased by a rolling boulder.
- Doofenshmirtz is dressed similarly to René Belloq, and intercepts Ohio and Rhode Island at the beginning in a manner similar to how Belloq intercepts Indy at the beginning of Raiders.
- Isabella betraying Ohio and Rhode Island is a reference to how Elsa betrayed Indy in The Last Crusade.
- As the temple is crumbling, Doofenshmirtz remarks "Probably my face will melt now, and for what?" which is a reference to the fates of Arnold Toht and Colonel Dietrich at the end of Raiders.
