|Season 3, Episode 27|
|Airdate:||June 11, 2004|
|Writer(s):|| Mo Willems|
|Storyboards by:|| Kim Arndt|
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Female's Utopian Trap Unleashes Reprehensible Evil
Numbuh 4 is sent to St. Rita's Preparatory School, but discovers that it's a girls only boarding school. The director, Margie, wants to transform him and every other boy on the planet into girls, with the aid of her future self. Numbuh 4's left hand is girlified and he escapes, pursued by Margaret's mobile school. He attempts to contact Sector V for help but learns that they have already been girlified. However, he somehow manages to escape from Margie and the squad.
Seventy-five years into the future, Numbuh 4 still needs time to battle the evil plans of Madam Margaret with the help of the Boys Next Door, a future version of the KND in which all the operatives are boys who defend other boys from girls towards them (and from being turned into girls). One day, Sally Sanban, Numbuh 3's granddaughter, appears, inspired by her grandmother's stories of how boys and girls used to fight together against the adults. She brought them a girlifier rifle in hopes of reversing its effects.
Unfortunately, Madam Margaret had anticipated her desertion and had secretly planted a tracker on her, sending her mobile fortress to finish off the BND. The BND fight their hardest, even with the reversed girlifier but are all girlified with the Supergirlifier Cannon. Madam Margaret enters in her office happy that she had finally sealed the fate of every boy. However, Numbuh 4 appears in scene and after knocking Madam Margaret with a kick, he erases Madam Margaret's dystopian future. After he leaves, Madam Margaret tries to use the time machine to follow him into the past and avoid her government's erasure from existence, but Sally then destroys the machine to prevent Margaret from following him. Knowing that her end was sealed and that all things obtained with her tyranny will cease to exist just like her, shouts a strong "No".
In the present, elderly Numbuh 4 appears in front of Sector V, who become hostile upon seeing him as an adult but he convinces them that his younger self is in trouble (with the help of Numbuh 3). They rescue Numbuh 4 and unleash Numbuh 3 in H.I.P.P.I.E.-H.O.P. against younger Margaret. Her future soldiers attempt to blast H.I.P.P.I.E.-H.O.P. but they find out their Girlifying Rifles have no effect against H.I.P.P.I.E.-H.O.P. (as it's already very girly). Numbuh 3 then smashes younger Margie's time machine and has her sent to another school for life. At the same time, as alternate dystopian future is erased from existence as well with the Girl Squad and the Girlifying Rifles.
With the future changed, both Numbuh 4's left hand return to normal and the girlifying soldiers cease to exist dissapearing from the scene. Older Numbuh 4 then tells his younger self what not to do in his future but fades from existence before finishing his sentence about failing to ask out someone. Numbuh 4 fails to understand and the KND go home. The episode ends with a better future 75 years later, showing girls and boys in harmony. Sector V's treehouse is then seen in sillouete.