The Delightful Children From Down The Lane attack Sector V's headquarters with an infestation of hair-eating lice. After the KND find out they don't like nacho cheese, they decide to shoot nacho cheese at them to get rid of them.

Numbuh 1 has a secret girlfriend who is bent on mind controling him! So, Numbuh 1's friends have to save Numbuh 1 from being mind controlled or their days as KND could be numbered.

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

All of the teenagers in Sector V's hometown have formed a place called The Point, and Numbuh 1 suspects that they are helping the adults.

A villainous half-man, half-baby named Mr. B gives the Kids Next Door a television series of their own.

Can Numbuh 1 stop a camp counselor without the help of 2 and 3? Probably not...

Numbuh 2's little brother, Tommy (who is shunned by Sector V) joins forces with a villain, Common Cold.

Two parental villains are stupefying KND operatives around the world; an operative named Chad (Numbuh 274) enlists the help of Sector V.

Sector V tries to destroy all the pianos in a truck with a hamster that acts as Numbuh 4's replacement.

Sector V is put into a "kids zoo" and must unite with the Delightful Children From Down The Lane and get all the other children out of their cages before lunch time to escape being fed to the zoo's cannibal bully.

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

The boss of Rainbow Monkeys Inc. uses Numbuh 3 to find real Rainbow Monkeys for him.

The Delightful Children from Down the Lane turn to Father for help, and the Kids Next Door are forced into a dangerous showdown.

An operative has apparently reached her thirteenth birthday, and is scheduled for decommission; but on route to the moon base, the transport ship carrying her is shanghied and forced to land. When the local KND arrive on the scene, they now must work with Decommission Officer Numbah 86, a boy-hating brat with a bad attitude! And when the fugitive flees to the Delightful Children's mansion, the

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 1 hears word that a ten-year-old progidy has been accepted into a prestigious British College, and fears that the adults seek to remove his brain. With the rest of the team refusing to give up their day off, 1 travels across the Pond himself - only to find that the report was a ruse by the misunderstood mad scientist Professor Triple Extra-Large! The snow-cone expert has come close to perfecting his masterpiece, and now needs a test subject who is immune

The team is giving a report on their mission to retrieve a mysterious box, while trying to keep the Delightful Children from getting it. Unfortunately, each operative's version of the story is... exaggerated to say the least. Can their superiors find any truth in their speculative snafu?

The Delightful Children put out a contract on Numbah One's head, and send the most unlikely of assassins - the sentient pair of underpants known as Mr. White! Unfortunately, his attacks make the team think that their leader has gone loco! Can Numbah One survive the assault of this unruly underwear? And is there more to this pair of beastly briefs than meets the eye?

On a rountine mission to the Moon Base - in which Numbuh 3 is forced to bring along her kid sister Moshi - the team encounters a seemingly abandoned prison transport ship; and thanks to Moshi, they crash into it.

The KND take a vacation to the beach (and Numbuh 1 promptly leaves, since he hates the place), where Numbuh 3 is quickly kidnapped by the armored Kinights of the Round Towel, who drag her before King Sandy, a miniature monarch who quickly falls in love with her! Naturally, the concerned Numbuhs 4 with Numbuhs 2 and 5 confronting the beachcombing brat in his enormous sandcastle... but they are soon overwhelmed. Can the KND topple this tiny tyrant before high tide?

The Delightful Children have the team right where they want them (again), when suddenly, the helmet headed member (his name revealed as Lenny) pushes the wrong button on their vehicle, ruining the villains' plans. The KND start to head home, when they are called to the Moon Base, where they meet with Numbuh 274... and Lenny himself! The Delightful Child claims that he is the reason that his siblings plans always fail, and that he intends to help the KND organization by

Father learns that Numbuh 3 is traveling to her homeland to meet up with the secret Japanese branch of the Kids Next Door; so he sends his best spies, the Interesting Twins From Beneth the Mountain, to trail Kuki and find the location of the Japanese agents' hideaway so an attack can be made. But when the two young spies trail 3, a combination of thei

When Numbuh 1 is fishing with his dad, Numbuh 86 and her group appear and tell him that he's been scheduled for a decommissioning! Although he escapes, his teammates are taken to be decommissioned, so he has to enlist the help of Numbuh 2's little brother Tommy to try and save them! Unfortunatly, he is too late, but can he still save the Moon Base from a fiery demise?

Upon returning to the Treehouse, an injured Numbuh 1 orders a lockdown! But it soon becomes clear that the five are trapped with Count Spankulot! But is the Count the real intruder? Or is another spank-happy vampire in their midsts?

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