"In Like Ed" is the 9th episode of Season 2 and the 35th episode of Ed, Edd n Eddy. In this episode, the Eds become suspicious of Kevin (as he seems to know far too much) and decide to spy on him to see where he gets his intelligence from.
The episode begins with the Eds pricing merchandise for their garage sale at Eddy's Garage. Eddy, being the penny-pincher he is, prices his merchandise at ridiculously high prices, while Honest Edd offers his merchandise at rock-bottom prices. Ed, on the other hand, mindlessly begins tossing random items onto his table and pricing them, including the table itself. He finds a bow and begins shooting everything he can find out of the bow, including Eddy himself. He fires Eddy out of his garage and onto his lawn, where he finds Sarah and Jimmy, who'd just bought a blender from Kevin's "Better n' Eddys' Garage Sale" for a nickel. Upon going to Kevin's sale, they're immediately stunned at his success and his ability to guess what his customer wants before they ask. Ed tries to tell Kevin something, but Kevin guesses what he wanted to say before Ed himself could say anything. Edd and Eddy decides to spy on Kevin to find out where his intelligence comes from.
At Edd's Backyard Shed, Edd shows Ed and Eddy an assortment of gadgets, including a Jet Pack, Baking Powder Smoke Bomb disguised as a Jawbreaker, a Tape Recorder concealed in a Bucket and a Broom with a Radio Transmitter hidden its head. As Ed and Eddy test some of the gadgets, the "Kevin Motion Alert" goes off and The Eds watch the transmission. But Kevin finds the camera hidden on his doorstep in plain sight, poorly disguised as a tree and destroys it. Edd tells Eddy and Ed that they will need to spy on him in person.
The Eds spy on Kevin and follow him. They then spot him entering Jimmy's House with Rolf holding packages. The Eds peer through the window and conclude that Kevin is a part of some "clandestine organization based on the exchange of classified information" and that they are having a meeting at Jimmy's. They decide that they will shut down their operation, but unbeknownst to them, they're about to ruin Jimmy's Birthday Party.
Edd and Eddy enter the house and begin to analyze the refreshments for any anomalies, but find nothing out of the ordinary. Meanwhile Ed tries to enter the house by unconventional means, but fails to do so. Edd and Eddy have a look at the packages using Edd's X-Ray Glasses but only seem to find Teddy Bears. Ed suddenly falls out of a Pinata the Kids are trying to burst open and joins Edd and Eddy to open the presents, but still find nothing out of the ordinary. Jimmy runs away crying after he finds that nobody gave him a pony like he wanted, and The Kids accuse the Eds of wreaking his Party and approaches them to beat them up. Eddy then pulls out Edd's Baking Powder Smoke Bombs out of his pocket and detonates it, causing everything in the house to be covered top to bottom in Baking Powder. As The Kids appear to be missing in the flood of baking powder, Eddy suggests they hightail it, but the baking powder-drenched kids appear from the baking powder and advance towards them to give them a thrashing, as Ed tells his friends that their situation reminds him of a B-Rated Film he watched.
Eddy: [after hearing Ed make weird noises while pretending to be a car] "Did you eat breakfast this morning, Ed?" [grabs a blender from a box] "Here, give this to Double D to put on the table." Ed: "Service is my middle toe! Check, please!" Eddy: "Should've ate breakfast, Ed."
Eddy: "Quit holding out, Double D. Where's the smoke screens, the oil slicks, the laser watches?" Ed: "Uh, Double D, what's this do?" [shakes coat-hanger] Edd: "That's just a coat-hanger, Ed." Ed: [staring at coat-hanger longingly] "Oh. Mum's the word."
Eddy: "Loudmouth to The Projector, do you read me?" Edd: [on the walkie-talkie, displeased] "The Professor, Eddy. I'm The Professor!" Eddy: "Whatever. Big Chin has made contact."
Rolf: "Let Rolf get the door, pale Jimmy." [Eddy enters] "What?!" Eddy: "Nice little soiree, huh, Rolfy-boy?" Rolf: [spotting Eddy gatecrashing the party] "You have an invitation, overdressed Ed-boy?" Eddy: [trying for suave] "The crow caws at midnight." Rolf: [unmoved] "And the cat sours the basil. Rolf would love to talk politics but I must see your invitation." Eddy: "No problem stretch…Look! Who's that hairy beast eating all the dip?" [runs off] Rolf: [confused] "Nana?"
Eddy: [grabs smokescreen from Edd's Backpack] "Good luck catching us, as we'll be invisible to the naked eye, with this baking-power vapor barrier! A shroud one might say!" Rolf: [amused] "You said a mouthful!" Kevin: [beats fists together] "It's poundin' time!" Eddy: "You'll never take us alive!" [throws the smokescreen to the ground, causing a giant explosion of baking powder to erupt out and cover everything with baking powder] Edd: [covered head-to-toe in baking powder, speaking with an air of world-weariness] "Now do you see the importance of extensive testing?"
Ed: [Noticing that the kids are missing] "Where'd everyone go?" [Camera pans, revealing the entire room, covered top to bottom in baking powder, with the furniture tossed aside and dumped in the piles of baking powder.] Edd: "Messy! Messy! Messy!"
Ed: [delighted as the other kids, covered in baking soda, angrily advance towards them] "Oh cool! This reminds me of the movie 'Zombies from the Deep Freeze - A Cash Cow.' This is the part where we'll be torn to pieces, stuffed into ice-cube trays, and frozen and used to cool their drinks!" Edd: "Non-alcoholic, I hope?" [Jonny maliciously laughs.]
The voodoo mask in Ed's for sale pile is orange instead of purple, as regularly seen. After the pile collapses, it becomes purple.
One of the milk cartons comprising Eds' periscope changes colors between shots. First it appears yellow, then it becomes blue like the carton under it, then back to yellow again.
When Nazz punches Eddy, she hits him in his right cheek. In the next shot, Eddy has a black eye.
When the Baking Powder Vapor Barrier was used to escape, his eye goes back to normal.
This marks the only time a character is shown to celebrate their birthday in the whole series.
Rolf's Nana may be very hairy. When Eddy distracted Rolf by saying "Who's that hairy beast eating all the dip?!", Rolf then inquires "Nana?"
This episode depicts the most of Edd's experimental inventions:
Level 2 of Ed, Edd n Eddy - The Mis-Edventures ("Pin the Tail on the Ed") has a plot similar to this episode, where the Eds attempt to get into Jimmy's birthday party. In the game, however, it is shown from the start that it is Jimmy's birthday, and rather than trying to figure out what the kids are up to, the Eds have to use the sewers to get into the party.
When Edd is showing his stuff for sale, one of the Elevation Boots (the right one) from "A Pinch to Grow an Ed" is seen. The shoes were destroyed in that episode, but the one shoe is shown repaired in this one.
Later, in "3 Squares and an Ed," both shoes are seen again, but in damaged condition. It is possible they were used again sometime after this episode.
The Body Heat Seeking Goggles from "Ed-n-Seek" reappear, being shown to double as X-Ray goggles. In this episode, Edd uses them to look inside the presents at Jimmy's birthday party without opening them.