The KND learn about evil mustaches taking over the faces.

The Delightful Children once again hold their annual birthday party in the usual sadistic manner planning to eat their cake and not let any of their unwilling guests have so much as a taste.

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!

Numbuh 4's disgust at anything Rainbow Monkey only increases when he finds himself trapped on Rainbow Island.

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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.

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.

A dinner get-together between Numbuh 2 and Numbuh 3's respective families turns sour when Numbuh 3's Posh Party Rainbow Monkey doll is badly damaged with a fork in its back. Now it's up to Numbuh 2 to figure out the murderer of the doll.

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

Everyone's collections of Rainbow Monkey toys are mysteriously vanishing. The KND investigate and discover the toys revolving around the planet Saturn as its big ring!

Numbuh 4 learns he is to be sent to a boarding school but he isn't worried, as he's always escaped from them before. But then he learns that the school is being run by the evil child Madam Margie, a girl who is getting high-tech aid from none other than her future self! Madam Margie's abominable plan is to create a twisted utopia where girls rule the world, using a demonic weapon called the girlifying ray that can turn anything feminine! The team seeming doesn't stand a chance until they recieve aid from a strange source Numbuh 4's OWN future self!

Nigel is exhausted and dirty after a hard mission, and when he takes a break, Lizzie intercepts a mission spec from Numbuh 65.3. Deciding to give Nigel a break, Lizzie tricks the rest of the team into thinking Nigel put him in charge, and assumes the role as leader. But Lizzie i

Numbuhs 2 and 5 must rescue the first grade class's pet rabbit before it is turned into a chocolate bunny by Heinrich Von Marzipan.

Numbuh 4's newly-installed backyard pool is the portal into an alternate dimension where everything is the opposite of everything in the real world.

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The evil Chester is developing his Happy Headband a strange device he plans to sell to parents to keep kids out of their hair.

At the KND Arctic training facility (the second largest KND base in existence, and location of the top secret KND Code Module), young cadet Tommy is

Numbuh 3 takes her little sister Mushi for a ride through the Rainbow Monkey Sugar Coated Castle of Love, but what promises to be a day of fun is ruined when King Sandy and his knights attack! The insane sovereign has never given up in his quest to marry Numbuh 3, and he threatens to destroy the Rainbow Monkeys unless Kuki agre

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.

The villains attempt to capture the KND Treehouse, but the Toilenator, trying to be helpful, only hinders their plans.

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When the Kids Next Door discover a plan to ruin Christmas, they must team up with Elfa Strike to save the day.

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