When turnips are found everywhere in Sector V's treehouse, they go to the source: a giant turnip, to defeat it.

A fly finds its way into Sector V's headquarters.

Numbuh 5 tries to keep the treehouse quiet so Numbuh 1 can sleep.

The Delightful Children From Down the Lane are holding a social, and the KND are invited! Smelling a rat, Numbah One and the team decide to go for a reconaissance mission - and as the only one without a date, he brings Lizzie along. But when the Delightful Children spring their trap, Lizzie becomes more of a hindrance than ever. Will Numbah 1 prevail? Will his relationship with Lizzie survive?!

It's Numbuh 3's birthday! Her party seems to go well, until the team hears her birthday wish - to lead the team on a mission! Hoping to make her happy, Numbuh 1 quickly makes up a simple task for her - to retrieve a Kid's Meal from the new fast food place, the Burger Frenzy. But Numbuh 3 gets more than she bargains for when she discovers that, in this case, "Kid's Meal" actually refers to the main ingredient of the meal!

Everbody knows that ice cream comes in three basic flavors - chocolate, vanilla, and strawberry. But Numbuh 5 knows only too well the legend of how the ancient ice cream monks created a FOURTH basic flavor, and hid it away in a hidden temple, where only an ice cream lover with the purest taste buds could ever taste it. But when the Delightful Children steal the sacred Golden Scoop, Numbuh 5 finds herself dragged to the trap-laden temple, where the evil children force her to penetrate its inner sanctum. Will Numbuh 5 prevail in this frozen frenzy and get a taste of the fabled Fourth Flavor?!

Numbuh 2 and Numbuh 4 visit the grand opening of a cheese-themed restaurant which seems to have a big problem - an appalling lack of cheese! And when 2 reveals that he's brought his own, the source of the problem is revealed, when the operatives are kidnapped by cheese headed ninja, and then dragged before the Cheese Shogun, a mad martial artist who holds cheese to be more valueable than gold. Can 2 and 4 defeat this insane samurai and escape his deadly dairy dojo?!

Numbuh 2 has always been one of the best pilots in the organization but one day while taking his 2X4 aircraft for a spin, he's shot down by a mysterious child pilot with a 2X4 plane of his own. 2 seeks revenge, but the pilot is untouchable, and manages to shoot him down out of every aircraft in the team's arsenal. Considering giving up, piloting, finally finds a way to defeat the pilot only to discover that his supplier has been fooling them both into fighting each other in a plot to destroy every chili dog in town!

The Team attempts to crash the Annual We Hate The Kids Next Door Barbecue, only to find that the party has far more villains than they can handle! The team flees in their M.E.G.A.R.A.G.E aircraft, but Stickbeard and his band of buccaneers do not give up pursuit! When their craft is shot down by the Sweet Revenge, they land in the worst of places - in the middle of the ocean, in a disgusting sargasso of asparagus! Stranded, lost, with no edible food, a bad situation gets much worse when they are found by a great white aspargus monster! And when the vile vegetable seeks to make them its prey, all hope seems lost. Can their be any escape from this savage sprout?!

The Delightful Children kidnap the team's classmate, nerdy, spit-talking ""Leaky"" Leona, and force her to lead them to the dark underbellies of the school. Alerted by Numbuh 5, the team follows them, and find themselves in an ancient school, laden with deadly booby traps. Avoiding them all, the team finds Leona, strangely aged to an old woman, who leads them to the mythical Fountain of Youth! The KND are amazed at the prospect of remaining ten years old forever, but the Delightful Children desire nothing less than to destroy the Fountain, claiming that the goal of all children should be to grow up. Can the Kids Next door save the supernatural spring? And what strange secret is ""Leaky"" Leona hiding?

The true history of the genesis of the Adult-Child conflict is revealed. This is the story the Adults do not want you to hear.

It's the Delightful Children From Down The Lane's birthday again, and that means it's time once again for the Kids Next Door to make off with their fantastic cake! But when the plan to egg the Delightfuls to submission goes afowl, the Kids must decide whether the cake is really worth it.

Hoagie and the gang go to the KND Academy to watch his brother Tommy graduate while Father plans an all-out attack.

The KND try to get the Fourth Grade Class President to his Town Council meetings safely. A parody of Air Force One. Hurt Operative Safely Protected In Totally Antiseptic Location

Numbuh 4 discovers a chicken nugget that initiates a chicken nugget rush.

The Delightful Children From Down the Lane decide to give their birthday cake to the winner of the annual Tubathon race and everyone is eager to go for it. No one is more eager than Numbuh 2, who plans to use his old tube, Betsy, and "farfegtubing". But are the Delightfuls keeping their word about the cake or are they luring the competitors into a trap?

Numbuh 4 is forced to choose between helping the KND battle the villainous Soccer Mom or engaging at his new gig as a matador in the Bully Fights.

Numbuh 1, both literally and figuratively, risks his neck when he sides with an adult to rid children of snake-like ties.

An operate named Maurice is decommissioned from the Kids Next Door after he attains the age of 13. He has been working on a cure for chicken pox. The one who is saddened the most by his departure is Numbuh 5, so she suggests that they keep an eye on him so that the teenagers don't recruit him.

The powerful Dodgeball Wizard believes that adults are better at playing dodgeball than kids, so when he learns of "the one called Beetles," a kid who is a greater dodgeball player than he is, he becomes determined to destroy his rival. And that rival is, apparently, Numbuh 4!

Tommy refuses to take a bath until he goes down the drain (literally)! He meets Captain Jimmy a parody of Captain Kirk in Star Trek who is the high-strung leader of the crew of a ship called the S.S. Stinkypants. Tommy gets inevitably involved in a battle with Moby Duck which ends with the crew hiding from the giant bird in bubble fog. The team attacks Moby Duck after hearing an inspired speech by Tommy but the plan goes overboard and Tommy and Captain Dirt learns why it's usually a good i

The show starts off with a live-action interview of Abigail Lincoln (now Abigail Gilligan) (Numbuh 5) and the rest of Sector V. Even though they are now adults, they are told by an unnamed, unseen interviewer that the effects of decommissioning have been temporarily reversed so they could be interviewed on their final mission.