After having to put up with Vicky on an especially bad day, and after seeing how she treats hew own dog, Doidle, better than him, Timmy wishes he and the dog exchanged minds. At first, Timmy likes the wish, but he finds out he has to go to a torturing veterinarian for a painful visit, he wants to be a boy again. But since he's a dog, he can't voice his wish, and Timmy and Doidle must find a way to get back to normal.
Timmy wishes for "You Doo Dolls", magical doll likenesses of Timmy's teachers and classmates that can control whoever they depict, but he runs into problems when Tootie finds a You Doo doll of him that Cosmo erroneously left lying around, and things get worse when Francis steals it from her!
The neighborhood is having a block party, and all of the Turner's child-less neighbors are putting on better looking shows than the horrible magic act that Mr. Bickles is putting on. In order to lure everyone away from the Dinklebergs' front lawn Britney Britney concert, Timmy uses Cosmo and Wanda to put on a real magic show. After saving Trixie's life, Timmy's new masked magician identity becomes a superhero, but according to the Crimson Chin, every superhero must have a super villain to oppose them, and Timmy's is Mr. Bickles, who is none to happy about Timmy showing up his act!
Timmy attempts to create the perfect movie in order to win the Dimmy Award and impress Trixie, but the movie he makes with his friends is a disaster. He soon finds the way to make it perfect using his fairy godparents, but he forced to choose between his friends and Trixie the night before his premiere.
Tired of always being wrong, Timmy wishes that whatever he said was always right. Unfortunately when he denies the existence of his fairy godparents to Mr. Crocker, Cosmo and Wanda disappear completely, and the only way to bring them back is to tell someone they exist!
After Timmy wishes Vicky away yet again, Mr. and Mrs. Turner want him to stay at Flappy Bob's Learnatorium while they go to the beach. To get away from Francis and the bullies at the day care center, Timmy wishes that he was a baby. However, since babies can't talk, he soon realizes he can't unwish the wish!