S3 E1 • Operation: F.U.T.U.R.E.

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! Now the team must defeat this fiendish femme fatale and save the future, lest inter-gender relations between boys and girls perish forever!

Première diffusion : 11 juin 2004

S3 E2 • Operation: A.F.L.O.A.T.

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?!

Première diffusion : 18 juin 2004

S3 E3 • Operation: L.E.A.D.E.R.

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

Première diffusion : 18 juin 2004

S3 E4 • Operation: U.T.O.P.I.A.

The evil Chester is developing his Happy Headband, a strange device he plans to sell to parents to keep kids ""out of their hair."" Numbuh 1 breaks into his lab and steals it, but when escaping on his G.A.R.G.O.C.Y.C.L.E., Chester shoots him down. The operative lands on a strange island which seems to be a children's utopia - lakes are made of soda, candy grows from trees, you can have birthday cake for dinner, and best of all, no adults! But soon, Numbuh 1 r

Première diffusion : 25 juin 2004

S3 E5 • Operation: R.O.B.B.E.R.S.

It's time for the morning commute to school, and for once, Numbuh 4 is anxious to go, mostly because he has a crush on the new teacher. But on the way to school, the bus is attacked by kids dressed by cowboys packing chewing-gun loaded six-shooters, demanding the students' spelling homework! Now Numbuh 4 pursues the bandits outside, while Numbuh 5 engages them on the bus itself. Can they save the day before first bell? And who is the brains behind these delinquent desperadoes?!

Première diffusion : 25 juin 2004

S3 E6 • Operation: F.O.U.N.T.A.I.N.

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?

Première diffusion : 9 juillet 2004

S3 E7 • Operation: B.U.T.T.

Feeling that Numbuh 1 must take a day off, the team force him to go to the beach, telling him to have fun or else. Nigel makes an honest attempt - until a crab swipes his swim trunks! After suffering a great amount of public embarrassment, 1 makes his way back to the Treehouse... and minutes later, walks out of his room to tell his terrified team that he's resigning from the Kids Next Door! After he leaves, the purpose becomes quite clear... an envelope is found in his room from the Delightful Children, with a picture of his tush and a note saying ""Leave your team behind or we'll put your behind in the school yearbook."" Now Numbuh 1 is heading for Delightful Manor, where the evil peeping toms desire to make him one of them! Can the team save their leader from the sadistic shutterbugs?!

Première diffusion : 16 juillet 2004

S3 E8 • Operation: T.R.A.I.N.I.N.G.

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

Première diffusion : 16 juillet 2004

S3 E9 • Operation: A.R.C.H.I.V.E.

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.

Première diffusion : 23 juillet 2004

S3 E10 • Operation: S.L.U.M.B.E.R.

Numbuh 86 is having a top-secret girls only slumber party. Numbuh 4 is willing to find out what the slumber party is all about even if it means having to put on a little make up.

Première diffusion : 23 juillet 2004

S3 E11 • Operation: P.I.N.K.-E.Y.E.

Numbuh 2 has set up a private eye office in the school janitor closet, and soon he gets his first case - someone is inflicting students with bad cases of pink-eye! When Numbuh 86 becomes the latest victim and he gets no help from Joe the hall monitor (his old partner before he joined the KND), 2 does some of his own deductive work - until Joe attacks him. When he confronts the crooked monitor, Joe himself is attacked, and 2's investigations lead him to the school nurse - who appears to be using the students' illness to make the topping for crumb cake! Can Numbuh 2 close the case on this crummy cake caper?!

Première diffusion : 30 juillet 2004

S3 E12 • Operation: K.A.S.T.L.E.

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

Première diffusion : 30 juillet 2004

S3 E13 • Operation: C.A.K.E.D.-T.H.R.E.E.

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.

Première diffusion : 6 août 2004

S3 E14 • Operation: L.O.C.K.D.O.W.N.

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?

Première diffusion : 6 août 2004

S3 E15 • Operation: G.R.A.D.U.A.T.E.S

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

Première diffusion : 6 août 2004

S3 E16 • Operation: H.U.G.S.

Numbuh 4's disgust at anything Rainbow Monkey only increases when he finds himself trapped on Rainbow Monkey with a garganturn, montstrous Rainbow Monkey Kong.

Première diffusion : 13 août 2004

S3 E17 • Operation: J.E.W.E.L.S.

Numbuh 5 journeys to the exotic Al-Suhgar Desert to recover her stolen candy, the Blurpleberry Supreme, and discovers she's not the only one searching for the powerful, mystical candy.

Première diffusion : 13 août 2004

S3 E18 • Operation: T.R.I.C.K.Y

Trivial Rival Instigates Candy Krazy Yearning

Première diffusion : 29 octobre 2004

S3 E19 • Operation: U.N.C.O.O.L.

Numbuh 4 tries to get his candy back from Stickybeard on Halloween.

Première diffusion : 29 octobre 2004

S3 E20 • Operation: P.R.E.S.I.D.E.N.T.

The KND try to get the Fourth Grade Class President to his Town Council meetings safely. A parody of Air Force One.

Première diffusion : 6 novembre 2004

S3 E21 • Operation: H.O.S.P.I.T.A.L.

An important operative suffers an accident on a dangerous mission and is sent to the hospital. But one ex-KND member is out to scramblify his brain, and it's up to Sector V to make sure he is safe, especially Numbuh 3.

Première diffusion : 6 novembre 2004

S3 E22 • Operation: S.P.R.O.U.T.

Numbuh 4 accidentally eats a brussels sprout, sending the rest of the KND on an emergency Fantastic Voyage to stop the dreaded vegetable from being digested.

Première diffusion : 12 novembre 2004

S3 E23 • Operation: H.O.U.N.D.

Numbuh 5 takes on a vicious dog who is always eating her homework.

Première diffusion : 12 novembre 2004