|“||This time, it's not a Comedy World.||”|
— The movie's tagline.
It should be noted that this film was originally intended to be the series finale of the show, but due to the success of the movie, and the series overall, the show was renewed for a fifth season. Further episodes that were produced were officially stated to take place before the movie, thereby making this film the "true" series finale.
When the Lucky 9 hears about a statue that is supposed to represent Lakeside City, they decide to buy fireworks in order to use them at the presentation. But when everything goes awry and the monument gets demolished, they receive a rude awakening from Principal Walker.
The movie opens up in prehistoric times, where an ancestor of PC Guy has just invented the wheel. An ancestor of Principal Walker, jealous of the PC Guy ancestor's success, declares war against him. The Narrator says that we've just witnessed the origin of the Pearson/Walker rivalry.
In the present, PC Guy is watching TV, when Walker inexplicabliy jumps out of it and whacks PC Guy with a ruler. This was revealed to be a dream, as Oscar wakes PC Guy up. PC Guy and Eric go through their morning routines and then phone the rest of The Lucky 9.
The 9 decides they should celebrate their anniversary somehow. They then find a flyer that states a statue that will represent Lakeside City will be unveiled that night. Kimberly says they should make the unveiling extra special by launching fireworks. They go to the firework store, and Eric foolishly buys remote controlled ones (they were 3 cents cheaper).
That night, The 9 is preparing to launch the fireworks. Everyone in Lakeside City arrive to view the statue unveiling ceremony. When the statue is revealed to be of nobody but Principal Walker, Eric drops the remote and breaks it. The fireworks launch, and fly straight into the Walker statue, smashing it to smithereens. The crowd then turns their attention to Walker.
Walker successfully tricks the town into trying to KILL the 9 for vandalism, and the crowd pursues them. The 9 splits up to buy time. Dallas and Constantinos hide in an alley, but get chased out by a bulldog. Kimberly and Stanley hide in a fountain, and they get caught by a scuba diver. David and Joey jump off of a bed and into a tree, and get mistaken for monkeys. PC Guy phones everyone to meet at the Maldanado house.
In the panic room of the Maldanado house, PC Guy takes roll call, and is horrified when he discovers Eric is absent, but Eric was just at the fridge eating all the food. PC Guy decides that they need to escape Lakeside City as soon as possible, now that Principal Walker has taken over. The 9 decides to pack lightly, and they carjack Old Man Esmond's minivan that he spent his retirement funds on. Suddenly, it turns out that escaping won't be so easy, as Walker has set a bounty of $250,000 on The 9 to have them killed, and he has hired a group of hitmen to murder the gang in cold blood.
After an epic car chase through Lakeside City, The 9 finally loses the group of hitmen by driving across a drawbridge that is opening for The World's Slowest Tugboat Parade. The most trusted and experienced hitman, Edgar, takes this as a challenge, and successfully drives their car through the canal. Meanwhile, Walker constructs a wall around the city...
The next day, The 9's car breaks down in the middle of nowhere. Luckily, there is a service station nearby. When they enter the main building, they find it deserted, though there is a coupon for a nearby restaurant on the floor. The group fights over who gets it, until Eric realizes that the coupon had expired in 1678, and the restaurant had closed soon after.
Suddenly, Sebastian spots a car outside, but it's only a mirage. Then, The 9 sees an abandoned camper-van that they decide to sleep in for the night, but little do they know that they are trespassing on private property. Back in Lakeside, Walker has taken the mayor hostage, and has named himself Ruler of Lakeside, which he subsequently renames Walkerville. Various buildings are being demolished to make way for nuclear power plants, and Paul is forced to close his pizza shop.
Next morning, The 9 is chased away from the camper-van by an angry farmer, who is holding a pitchfork. The 9 comes across a lush forest, and decides to seek shelter there. Meanwhile, the team of hitmen arrive at the service station from earlier, and the lead hitman examines a piece of hair left by PC Guy. Suddenly, an employee laughs at and mocks the hitman for playing with dust. The scene then cuts to aforementioned employee's grave, which says "He Got The Last Laugh".
In the forest, Joey decides to practice a wild bird call, though the awful noise produced by said call causes a mudslide, covering The 9 in mud. A nearby photographer mistakes the mud-covered 9 for Sasquatch, and takes a photo. The flash causes PC Guy to walk into a tree, knocking a beehive down. The bees chase PC Guy into another tree, knocking a hornets nest down. PC Guy loses the angry insects after diving into a bush, but this very bush is the home of a king wasp!
Eric, still covered in mud, joins a clan of gorillas, an owl steals Stanley's money, and Constantinos' attempt to start a fire ultimately leads to the entire forest burning down. Meanwhile in Walkerville, pollution from the nuclear power plants has created a red smog around the city. Paul and Susan watch in tears as their home is bulldozed in order to build another nuclear power plant.
At the town hall, the citizens are lined up to get a bite of a tortilla. Inside, Walker is gloating in victory, stating that he is unstoppable, and soon, he will expand his empire to other parts of the world. Meanwhile, the hitmen arrive at the farm. They are greeted rather rudely by the farmer, who then proceeds to mock the lead hitman's hat. The scene cuts to the hitman stuffing the farmer's body in the fridge.
Elsewhere, The 9 approaches a shady and unwelcoming city, and it happens to be nothing other than the town of Clinton Heights. Dallas enters a boxing tournament and nearly wins the grand prize of $100,000, but ultimately does not receive his prize as he did not sign the liability waver with a no. 2 pencil. Meanwhile, Constantinos wanders into a dark alley, but gets surrounded by a gang. Luckily, Dallas is there to save him, but then the gang leader weakly says that they only wanted to share their nachos with Constantinos.
Then, The 9 spots a rather out of place and nice looking house, where they meet an old woman named Doris, who agrees to let them stay there for the night. However, unbeknownst to The 9, Doris has a deadly secret: she has a habit of taking in and killing strangers!
Doris then goes into her kitchen to make some dinner for everybody. PC Guy uses the time he has to wander around the house, but he starts to get creeped out, stating "he's seen enough". Right before he can warn the rest of The Lucky 9, Stanley goes into the guest room and he turns on the TV. Suddenly, it releases some incapacitation gas, and it succeeds in knocking Stanley out.
- Andrew Rannells as PC Guy
- Josh Peck as Eric
- Dabney Coleman as Principal Walker
- Erik von Detten as Carver Brutus
- Jeremy Irons as Edgar
- Jim Hanks as Dallas
- Gary Sauls as Constantinos
- Tom Kenny as David, Wyatt Payne, and Paul
- Carlos Alazraqui as Joey and Luke Luna
- Edward Felker as Stanley
- Billy West as Sebastian
- Jessica DiCicco as Kimberly
- The movie's animation is a lot more fluid compared to the original series, with detailed backgrounds, a wide variety of facial expressions, and smooth character movements.
- During production, The Narrator had a larger role. In the beginning, he went to a movie theater with his dog, Jacob, but for the sake of humor, he was kicked out for attempting to bring a pet into the theater, and Jacob was allowed inside.
- Also during production, the fight scene that occurs near the end of the movie had numerous changes:
- Dallas was supposed to be the character who would fight Principal Walker, but his role was replaced with PC Guy, because Gary Sauls wanted to make the scene "feel unique".
- After PC Guy and Walker fell through the city hall's skylight, there was supposed to be small amounts of blood on their bodies. This was eventually toned down and was changed to dirt and bruises.