"Tinker Ed" is the 14th episode of Season 5 and the 116th episode of Ed, Edd n Eddy. In this episode, Jimmy's love for fairy tales is shattered thanks to one of Eddy's scams. It is now up to the Eds to help Jimmy love fairy tales again.
The episode starts with the students of Peach Creek Jr. High gathered in the library, doing homework and reading books. Sarah is reading a poetic fairy tale to little Jimmy, while Kevin is working on a book report and asks them to stop reading because he accidentally wrote down a part of the fairy tale. Sarah, to annoy Kevin, starts reading louder and louder until, enraged, Kevin comes over and tells poor Jimmy, who believes in fairy tales, that such nonsense does not exist and is a load of baloney. Bursting into tears, Jimmy argues that fairy tales do exist by telling that his fairy tale dream has come true, and Rolf, worried about the safety of the load of baloney he literally has stored inside of his backpack, is afraid that the other kids are after his secret stash of baloney. At Jimmy's house, Jimmy is trying to make his carpet fly when the Eds show up. Jimmy tells them what he's doing but even Ed isn't dumb enough to think that fairy tales are true stories and is only convinced that Jimmy is crazy which makes Jimmy burst into tears.
Edd sympathizes with Jimmy while Eddy couldn't care less, but Jimmy's strong beliefs give the selfish and greedy con artist an idea for a scam. While Jimmy tries to transform an ordinary carpet into a flying carpet with his trusty stuffed dog Mr. Yum Yum by his side, Eddy walks over and tells Jimmy he saw a unicorn in the forest and that, for twenty-five cents, he'd take Jimmy to go see the unicorn if he wanted. Jimmy agrees and plans to take a picture of the unicorn to show to Kevin and prove that fairy tales really do exist. Jimmy is convinced by the costume and tries to play with the unicorn until the costume comes off and revealing the unicorn's portrayers to be Ed and Edd, making Jimmy not believe in fairy tales anymore. Crestfallen, Jimmy runs off crying, while satisfied Eddy plans to spend the quarter Jimmy paid him to see the "unicorn," but Edd scornfully rejects even the temptation of sweet jawbreakers and scolds Eddy for his deceptive behavior to which Eddy retorts that it's not his fault that fairy tales are a load of baloney.
The trio is given something to feel sorry for when Sarah stops by to tell the Eds that their scam turned Jimmy into a miserable zombie. Edd sees that the effect the manipulation had on Jimmy was worse than he thought, so he decides to have the Eds dress up as fairy tale creatures (Edd is a mermaid, Eddy is a fairy and Ed is a dwarf). After failing to be uplifted by this scheme, Jimmy notices a Golden Horseshoe, for which Eddy is obviously willing to pay money. Jimmy gives him the horseshoe, but it isn't a horseshoe after all. It's just a pair of fake dentures painted with gold nail polish. Jimmy's sad cloud disappears thanks to this scam. Eddy is furious, and that doesn't stop Sarah from snapping a picture of the Eds. She shows it to Kevin, who claims to be swayed by the fairy tale evidence presented.
Elsewhere in the woods, Rolf is shown fat from eating so much bologna. Nazz and Jonny find there, the former asking if he is okay. Rolf tells them that he has finished his load of baloney and lets out a wet belch, disgusting Nazz and entertaining Jonny. Both of them walk off, leaving Rolf lying in the woods with his belly aching.
Sarah: [reading to Jimmy] "The little fairy, so little was she her boat fitted inside a pea!" Jimmy: "Inside a pea? Dreamy!"
Ed: [to Jimmy] "Don't count your beans before they hatch, little fella!"
Eddy: [responding to Edd's Kodak moment] "That's just the kind of guy I am, Double D. I'm all heart. Right, Ed?" Ed: [jubilant] "Beans, beans are good for your heart, the more you eat the more you-" Eddy: [interrupts Ed before he can finish the song] "Shut up, Ed!" [drags Ed with his lip]
Edd: [gasping for air after being in the 'unicorn' suit with Ed] "Gracious, Ed! You could have at least left your shoes on!"
Eddy: [riding on Ed's head] "C'mon, Double D, the candy store awaits!" Ed: "And it's waiting a lot…" [hoping Eddy won't hear] "…big butt!" Eddy: "Huh? What's that supposed to mean? I ate a big breakfast. So what?"
Eddy: [to Edd] "Reminds me of the day my brother told me cartoons weren't real." Ed: [horrified] "Say it isn't so, Eddy!" Eddy: "Yup, growing up sure stinks."
Ed: [hearing Jimmy is now apparently a zombie] "Zombie? Ed must touch zombie!"
Ed: [looking at the "golden horse shoe"(AKA dental retainer)] "Horses don't have teeths on their feet, Double D."
Rolf: [lying in the woods, swollen with all the bologna he's eaten] "Mama! A purging for Rolf, I beg you!"
Kevin: "All that fairy tale stuff's a load of bologna!" Jimmy: "Fairy tales are not a load of bologna! My dream has come true, golly gosh! I'll show you! I'll show you all!"
Nazz: [to Rolf after finding him with a giant stomach after eating the load of bologna] "Rolf, are you okay? You don't look so good." Rolf: "Too late, vultures. Rolf has taken care of his load of bologna." [slaps his fat belly] "FOR GOOD!" [burps, causing Nazz to leave]
When Edd flipped over the dental retainer to show that it wasn't actually a golden horseshoe, a row of fake teeth was shown being revealed from the back side of it. However, when Eddy held it up a moment earlier, the teeth weren't visible even though it was being seen from that side.
When Nazz runs off the stump at the end of the episode, she walks on thin air.
When Ed says "Beans, beans. They're good for your heart!" the closed captioning says "Berries, berries. They're good for your heart!" instead.
Plank's book Mind Control for Pre-Pubescents is written by R. Vincent, PhD. Ruth Vincent is the show's producer.
Plank reading a mind control book might be a joke about how he's considered supernatural. This also seems to be poking fun at the implications given throughout the series that Plank controls Jonny's mind.
The pair of green legs crushed by the book in the title card is a reference to The Wizard of Oz with a book replacing Dorothy's house.