Maybe I'm giving too much credit to a Cartoon TV Movie, but when it has a moment where the world shows a dark transformation of what the future could be (With Danny Phantom: Ultimate Enemy, Fairly Oddparents: Abra- Catastrophe! and Kim Possible: A Sitch in Time, that makes three.) and it actually plays like a full length movie in a theater, and plays music that sounds like it came from a full orchestra, it has to be good.
The story is not unlike most of the episodes, which it starts off as, but in a much more dark time, when Kids are enslaved for creating Tapioca for an evil Villain named Grandfather. When a young boy only known as Numbah Zero uncovers an item called The book of KND, Numbah Zero starts what happens to be The Kids Next Door. Fast forward to years ahead, where a KND code Modulator, which is grabbed by Father, awakens Grandfather yet again, and now plans to destroy the entire world by turning everyone's youth, and majority of adults into "Senior Citizombies", soldiers of Grandfather, who with the transformation of the world, make the world look like it came from the 20's.
With very little hope for the world, It's up to the Kids Next Door to find the rumored Numbah Zero and save the world from Grandfather.
This will not disappoint. Where most TV Movies have a very poor ending, this one actually is very good. Not only does it have an awesome ending, but it doesn't leave you with some kind of dopey way of finishing the show, like going to fight an enemy right after saving the world, or having a character say something stupid, and the end shows everyone laugh at the end.
This movie gives you just five words to this ending, and it's probably the best ones to hear.
Now, it may be short, but compared to the 44 minute DP movies, or the almost 1hr. 30 mins. FOP movies, this one seems longer then the two.
If your a fan of the show, No doubt you won't miss this. If you aren't a fan, watch this movie. It's well done.