Wanda takes a day off while Cosmo and Timmy promise to spend the day without using any wishes, but one wish ruins the entire plan.

Cosmo has a chance to gain popularity when he is the next on the Fairy World List to host a Fairy Convention, but the convention turns out to be a destination alert when it happens in Timmy's bathroom while Crocker pays a visit.

Timmy and his friends visit the Old West and must face bandit Vicky.

Before his upcoming music video "My Shiny Teeth and Me", evil dentist Dr. Bender rips out Chip Skylark's teeth, stopping him from singing. Timmy must now contact the Tooth Fairy to seek aid in recovering Chip's teeth, and succeeds.

To help his Mom win the Dimmsdale "Veg-off," Timmy wishes her garden full of life, but he does not remember that his dearly departed pet gerbil, Eddie, is buried in the garden, and wreaks havoc in Dimmsdale.

Timmy, tired of his parents' strict rules, wishes for parents that cared less. However, when his mom and dad stop following the rules, and his new Fairy Godparents make things difficult, Timmy finds out why being responsible is important.

On Halloween, Timmy wants a Jack-O-Bot costume as his Halloween costume, but the only four Jack-O-Bot costumes in existence were won in a contest, which Trixie, Veronica, Tad, and Chad won because they bribed the judges. To make things worse, Vicky is being paid by Timmy's parents to take Timmy and his friends trick-or-treating, and forces him to wear a mummy costume made out of toilet paper. Vicky gets all of the candy, while Timmy and his friends get nothing. Realizing that Vicky is scary and gets more candy because of it, Timmy wishes that everyone's Halloween costumes were real and scary. This causes everyone to become real and scary versions of the costumes they wear, including the popular kids, who turn into the real Jack-O-Bots and threaten to destroy the world. Also, Timmy cannot undo the wish because Cosmo and Wanda were in costume at the time and are now no longer magical. Meanwhile, the Yugopotamians, seeing people celebrate Halloween, think Earth is planning an attack on them and attempt to counter-attack.

Tired of always being late, Timmy wishes for a watch that allows him to redo moments in time, but Vicky steals it.

Tired of being pranked by everyone (his parents, Cosmo and Wanda, his friends, and the rest of the citizens of Dimmsdale), Timmy summons the April Fool, the ultimate prankster, but Timmy does not know that once the April Fool starts, he does not know when to stop. Now, Timmy and his fairies have to stop him.

Timmy wishes the great American leaders into his house to finish his report, but because they have vanished from history, the United States reverts to being British colonies. To make things worse, Timmy is unable to wish them back, because Cosmo and Wanda's wands are taken for taxes (Taxation Without Representation). Timmy must now use his Time-Scooter to get them back to their own time period to stop Benedict Arnold from creating the alternate future.

Timmy becomes class president in order to be with Trixie, but it is not as great as he believes. His Secret Service agents (Chester and A.J.) constantly keep him away from Trixie and follow him everywhere, even into a bathroom stall.

Timmy tries selling lemonade to see Crash Nebula on Ice, but his lemonade tastes horrible. Timmy discovers that Cosmo's sweat makes the lemonade taste better, and adds it as his secret ingredient. His lemonade is now a success, but with an unfortunate side-effect: it grants the wishes of the people who drink it.

Timmy becomes suspicious of a rich boy named Remy Buxaplenty when he can be better at anything than Timmy is, and can even be in the Crimson Chin Comic Book as well. He discovers that Remy has a Fairy Godparent. Wanda knows who it is, but when she refuses to Timmy, he wishes for her to tell him. Remy's fairy turns out to be Juandissimo Magnifico, Wanda's ex-boyfriend. Remy discovers Timmy's fairies, and to make sure that Timmy does not wish he had more money than him (although Da Rules say that you cannot wish for money), he challenges Timmy to a Magical Duel, where the loser loses his fairies and forgets he ever had them.

After being disappointed by the Camelot Fair (the knight is shorter than he looks, the Magician is a cleaning product salesmen, and the Dragon is only a dog wearing a dragon mask that even it is afraid of) Timmy wishes that he was in the real Camelot, but Timmy's parents somehow come along with him and are about to be eaten by a dragon.

Timmy, tired of his parents rushing to work and coming home late and tired, thus never having any time for him, wishes his parents had superpowers, but they are too busy saving the world to even spend time with him. Timmy must now become the ultimate villain (a parody of Galactus) to get his parents to give up their superpowers (his wish made them powerful enough that not even magic would affect them, so they must willingly give up their powers).

Timmy wishes that he was the babysitter and Vicky was the child in order to get revenge, but his harsh treatment of Vicky results in Cosmo and Wanda being transferred to Vicky, who then causes trouble for Timmy.

Mark Chang returns to take Vicky with him, which Timmy is happy about, but his parents find him a new baby sitter. As a result, Timmy must go to Flappy Bob's Peppy Happy Learnatorium, where everything is boring (like having to watch an eight-hour documentary on moles and how smacking them in a game could lead them to extinction when he attempts to play a whack-a-mole game), too safe (unnecessary safety gear in a ball pit) and healthy (soy cubes). Timmy must now escape and get Vicky back.

Timmy accidentally wishes himself into a girl before Trixie's birthday party, and she uses her new feminine mind to get the perfect gift for her. However, it turns out that she likes boy stuff, too.

Timmy, tired of losing every game because of Chester, wishes that Chester would become a skilled baseball player, but Chester gets on Timmy's nerves when he starts hogging every position and shunning the rest of his team.

Timmy has a rough day without his godparents by missing the bus to school, getting soaked in rain, and hit by volleyballs in gym class. Being jealous at his godparents for their wonderful lifestyle, Timmy becomes a fairy godparent while Cosmo and Wanda become ordinary children. However, Timmy finds out that being a godparent takes more responsibility.

Timmy wishes up an indestructible bicycle, but the bike subsequently refuses to allow him to leave it.

On Friday the 13th, Anti-Fairies cause trouble.

On the last day of school, Timmy is getting the perfect attendance award, but Francis is celebrating the last day by beating up all the boys. In order to avoid getting beat up by Francis, Timmy wishes he was invisible, but then has so much fun being invisible that he forgets about the awards ceremony. Now, he must rush to get his award, and avoid Mr. Crocker in the process, as he is trying to capture him because he could use him as proof that fairies exist.

Timmy wishes he was the smartest kid in the world, but the situation becomes complicated when he is placed in a competition with A.J. and subsequently loses his intellect.

After watching an action-packed mystery movie, Timmy wishes for an action-packed life. However, it turns into terror when supervillain Jorgen captures Cosmo, Wanda, and all of the other fairies, and drains their magic out of them ("PG-13 horror" as Timmy calls it, is shown for this part). Timmy must stop Jorgen before he becomes the mightiest fairy in the universe.

Because Timmy wishes for things that were (coincidentally) stolen, Timmy is accused of shoplifting. Jorgen Von Strangle then comes for an inspection of Cosmo and Wanda, and if they fail, they will be taken away from Timmy. Meanwhile, Timmy is determined to catch the real shoplifter, Francis.

After Timmy wishes himself toy-sized to spend time with his old Crimson Chin action figure, Vicky's sister, Tootie, takes Cosmo and Wanda (disguised as dolls), and Timmy must go to Vicky and Tootie's house to find them.

Vicky, one of the best skaters at the skate park, is challenged by Timmy; if she wins, the skate park will have height limits on skateboarding, but if Timmy wins, the skate park will be open to all children.

Timmy grows jealous of Dimmsdale's teen-singing sensation, Chip Skylark, for holding a concert on his birthday. Out of anger, Timmy plans to hold him hostage at his house; surprisingly, Vicky falls in love with Chip.