Taking numbers instead of names, five extraordinary 10-year-olds form a covert team called the Kids Next Door with one dedicated mission: to free all children from the tyrannical rule of adults.
Codename: Kids Next Door (Season 1)
Operation: C.A.K.E.D. (Episode 1) 10.0
Writer: Tom Warburton
Air date: 2002-12-06
Runtime: 7 min
Overview: The Kids Next Door attempt to stop a party for their enemies.
Diseasy Does It (Episode 2)
Writer: Tom Warburton
Air date: 2002-12-06
Runtime: 7 min
Overview: Kenny and Chimpy are hired to do chores.
No P in the OOL (Episode 3)
Writer: Tom Warburton
Air date: 2002-12-06
Runtime: 7 min
Overview: Mr. Wink and Mr. Fibb extend adult swim time.
Operation: I.-S.C.R.E.A.M. (Episode 4)
Writer: Mo Willems
Air date: 2002-12-06
Runtime: 11 min
Overview: The Kids Next Door set off on a mission to the ice cream factory.
Operation: C.A.N.N.O.N. (Episode 5)
Writer: Mo Willems
Air date: 2002-12-06
Runtime: 11 min
Overview: With Numbuh One away, the Treehouse becomes an easy target for adults
Operation: N.O.-P.O.W.U.H. (Episode 6)
Writer: Mo Willems
Air date: 2002-12-13
Runtime: 11 min
Overview: The hamsters that power the Treehouse go on vacation, leaving the team vulnerable.
Operation: T.E.E.T.H. (Episode 7)
Writer: Mo Willems
Air date: 2002-12-13
Runtime: 11 min
Overview: The Kids Next Door are put in the crosshairs of Knightbraces.
Operation: P.I.R.A.T.E. (Episode 8)
Writer: Mo Willems
Air date: 2002-12-20
Runtime: 11 min
Overview: Stickybeard and his crew sniff out the Kids Next Door's candy depository.
Operation: C.O.W.G.I.R.L. (Episode 9)
Writer: Mo Willems
Air date: 2002-12-20
Runtime: 11 min
Overview: The team meets the last member of another era's Kids Next Door.
Operation: T.U.R.N.I.P. (Episode 10)
Writer: Mo Willems
Air date: 2002-12-27
Runtime: 11 min
Overview: When turnips are found everywhere in Sector V's treehouse, they go to the source: a giant turnip, to defeat it.
Operation: M.I.N.I.G.O.L.F. (Episode 11)
Writer: Mo Willems
Air date: 2002-12-27
Runtime: 11 min
Overview: After Numbuh 2 beats a mini-golf champion at mini-golf, the golfer shrinks Numbuh 2, and a whole lot of sights from around the world.
Operation: O.F.F.I.C.E. (Episode 12)
Writer: Mo Willems
Air date: 2003-01-03
Runtime: 11 min
Overview: When his father brings Numbuh 4 to work for "Bring Your Daughter To Work Day", Numbuh 4 discovers his father's boss plans to send him and all the daughters of his coworkers to Pluto.
Operation: A.R.C.T.I.C. (Episode 13)
Writer: Mo Willems
Air date: 2003-01-03
Runtime: 11 min
Overview: A fellow operative, Numbuh 30c, is sent to help Sector V stop a villain from using a weather machine to make no more snow days for school. It turns out that he was not helping, because he sent them the wrong directions, ignored their cries for help, and sent a missle to attack them.
Operation: L.I.C.E. (Episode 14)
Writer: Mo Willems
Air date: 2003-01-10
Runtime: 11 min
Overview: 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.
Operation: L.I.Z.Z.I.E. (Episode 15)
Writer: Mo Willems
Air date: 2003-01-10
Runtime: 11 min
Overview: 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.
Operation: T.H.E-F.L.Y. (Episode 16)
Writer: Mo Willems
Air date: 2003-01-17
Runtime: 11 min
Overview: A fly finds its way into Sector V's headquarters.
Operation: P.O.I.N.T. (Episode 17)
Writer: Mo Willems
Air date: 2003-01-17
Runtime: 11 min
Overview: 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.
Operation: C.A.B.L.E.-T.V. (Episode 18)
Writer: Mo Willems
Air date: 2003-01-24
Runtime: 11 min
Overview: A villainous half-man, half-baby named Mr. B gives the Kids Next Door a television series of their own.
Operation: C.A.M.P. (Episode 19)
Writer: Mo Willems
Air date: 2003-01-24
Runtime: 11 min
Overview: Can Numbuh 1 stop a camp counselor without the help of 2 and 3? Probably not...
Operation: T.O.M.M.Y. (Episode 20)
Writer: Mo Willems
Air date: 2003-02-07
Runtime: 11 min
Overview: Numbuh 2's little brother, Tommy (who is shunned by Sector V) joins forces with a villain, Common Cold.
Operation: C.H.A.D. (Episode 21)
Writer: Mo Willems
Air date: 2003-02-07
Runtime: 11 min
Overview: Two parental villains are stupefying KND operatives around the world; an operative named Chad (Numbuh 274) enlists the help of Sector V.
Operation: P.I.A.N.O. (Episode 22)
Writer: Mo Willems
Air date: 2003-02-21
Runtime: 11 min
Overview: Sector V tries to destroy all the pianos in a truck with a hamster that acts as Numbuh 4's replacement.
Operation: Z.O.O. (Episode 23)
Writer: Mo Willems
Air date: 2003-02-21
Runtime: 11 min
Overview: 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.
Operation: Q.U.I.E.T. (Episode 24)
Writer: Mo Willems
Air date: 2003-02-28
Runtime: 11 min
Overview: Numbuh 5 tries to keep the treehouse quiet so Numbuh 1 can sleep.
Operation: R.A.I.N.B.O.W.S. (Episode 25)
Writer: Mo Willems
Air date: 2003-02-28
Runtime: 11 min
Overview: The boss of Rainbow Monkeys Inc. uses Numbuh 3 to find real Rainbow Monkeys for him.
Operation: G.R.O.W.-U.P. (Episode 26)
Writer: Mo Willems
Air date: 2003-03-07
Runtime: 22 min
Overview: The Delightful Children from Down the Lane turn to Father for help, and the Kids Next Door are forced into a dangerous showdown.

Seasons

Episodes 26

Episodes 25

Episodes 23

Episodes 22

Episodes 22

Episodes 21

Episodes 5