The CN Movie

The CN Movie (sometimes referred to as The Cartoon Network Movie) is a live-action/animated adventure comedy directed by Thurop Van Orman, and is Cartoon Network's first ever live-action feature-length film. The movie takes place in October 2018 and the plot follows Finn reuniting with his old friends Chowder (now voiced by Raymond Ochoa) and Flapjack and on the verge of getting them their own movies, instead, they have to save the studio from being a film studio from a Warner Bros. executive who has been a fan of their shows.

The film will include B. D. Wong, Tina Fey, and Zachary Levi as the supporting cast, with Jeremy Shada as Finn, director Thurop Van Orman as Flapjack, and Raymond Ochoa as Chowder. The film will have a release in theaters on May 21, 2021. This also makes it Warner Bros.' third live-action and hand-drawn animation hybrid, preceding Space Jam and Looney Tunes: Back in Action.

Plot
Ever since 2010, Finn had been friends with Chowder and Flapjack. But when August came around, Chowder and Flapjack's shows were canceled, and Finn was upset that they were gone. Doing his show, he could barely take his mind off them to stay focused, but with help from his friends, he was able to stay on track. Fortunately, after eight years on the air, Finn felt glad to be part of the concluded shows. In the present day, Finn had explained his predicament to the other defunct shows in the studio, which leaves everybody in pity for him.

In Ooo, he; Jake; BMO; Bonnibel; Marceline; Simon; Phoebe; Lumpy Space Princess and Lady travel to Lady's barn to celebrate Jake and Lady's children's birthday. While there, he is less enthusiastic. After the party, Bonnibel comforts Finn and has a talk with him. Still on the fact that he and his friends were still not on speaking terms, she questions if he could just go over and meet them otherwise; giving Finn an epiphany.

As Finn sets off to reunite with his old friends, he has Marceline lie about his whereabouts until further notice. Upon the reunion, they discuss about the two's decrease in popularity and recognition, so Finn decides to get them each a film as to re-introduce them to the public. Arriving at the Warner Bros. studio, they get thrown out by security. After many attempts of getting in, they disguise as their creators and claim that they want to pitch their idea for The CN Movie; in which works. Heading inside, they meet the receptionist to ask if they could see head executive for their request on giving Chowder and Flapjack their own movies, in which she declines due to Chowder and Flapjack's shows' declining qualities, followed by getting thrown out again.

They sneak into the executive's office via transition flip and meet executive Dan Manson. Unfortunately, he forgoes their wish of giving them a movie despite being their biggest fan, but he could make a movie about all three of them if they sign a contract, for "personal reasons", to forward the idea. Arriving back at Cartoon Network Studios, the Adventure Time characters are distraught at Finn for his absence, indicating that Marceline hadn't covered for him. Finn tries to make up for it by explaining that they got a deal for a movie about the trio and half the studio's other characters. Chowder eventually discovers that they had signed away the rights to the studio, thanks to the Powerpuff Girls ' Narrator explaining the plot point.

The boys, knowing that they were responsible for signing away the rights, go back to the studio to get back the rights. Arriving back to Warner Bros., the boys try to get Manson to give back their studio's rights, in which he will for $50,000,000, much to their disappointment. With no other options, they decide to steal the contract back. At night, the boys sneak into the studio and break into Manson's office and find the contract. However, Manson found out that the boys would steal it, so he kept it with him, so they could not find it. In response to them trying to steal the contract, he brings security to escort them out, followed by knocking them out.

Waking up, they find themselves in a crate. Getting out, they find themselves in London, England. Unfamiliar with the country, they go around town to get help to get back to Burbank. At a nearby bar, they find out on the news that Manson will start owning the studio by tomorrow and will rebrand it as a film industry. Two patrons inside recognize the three and the boys inform them on their situation, and they agree to help them get back to California. Traveling by plane, they make it back still in time to stop him from owning the studio.

Getting to Warner Bros., they confront Manson and suddenly retrieve the contract from him, during their argument, then run off into the studio lot to loose him. They then hijack a security cart and drive back to the studio, with Manson and his bodyguards giving chase. They eventually loose them by Chowder rocketing their cart into the sky via spicy peppers, with the trio landing on a cruise ship. As they continue, their cart's engine stalls, much to their dismay. Fortunately, they get a lift from Manson's assistant Andrew Neilly.

Cast
Cameos consists of Ron Perlman as the director of Friends with Benefits; Kathleen Turner, Timothy Dalton, Randy Quaid, and Wayne Knight as the Friends with Benefits cast; Gavin Free and Dan Gruchy as two friends in London who help the trio get back to Burbank; Rebecca Parham as a woman carrying luggage; and Will Arnett as the California police chief.
 * B. D. Wong as Dan Manson, a Warner Bros. executive who has been a fan of Chowder, The Marvelous Misadventures of Flapjack and Adventure Time ever since.
 * Zachary Levi as Andrew "Andy" Neilly, Warner Bros. vice-president and assistant to Manson.
 * Tina Fey as Sandra Alexander, receptionist at Warner Bros. Studios.
 * Dave Boat as Smith, Manson's bodyguard.
 * Ben Schwartz as Winston, Manson's other bodyguard.
 * Tom Cavanagh as a security guard at the Warner Bros. Studios' front gate. The character is reminiscent of Michael Maltese's character in the Looney Tunes short You Ought To Be in Pictures.
 * Jeff Bergman provides the voice.

Voices
Additional voices include John DiMaggio as Schnitzel and Jake; Hynden Walch as Bonnibel Bubblegum; Olivia Olson as Marceline Abadeer; Jessica DiCicco as Phoebe; Pendleton Ward as Lumpy Space Princess; Dee Bradley Baker as Cinnamon Bun; Brian Doyle-Murray as Captain K'nuckles Jeff Bennett as Johnny Bravo, Peppermint Larry, and Choose Goose; Jackie Buscarino as Sally Syrup and Susan Strong; Dwight Schultz as Mung Daal; Tara Strong as Bubbles, Ben Tennyson, and Truffles; Liliana Mumy as Panini; J. G. Quintel as Mordecai; William Salyers as Rigby; Sam Marin as Benson and Muscle Man; Mark Hamill as Skips; Janie Haddad Tompkins as Margaret Smith; Minty Lewis as Eileen Roberts; Linda Cardellini as CJ; Zach Callison as Steven Quartz Universe; Estelle as Garnet; Deedee Magno-Hall as Pearl; Tom Scharpling as Greg Universe; Shelby Rabara as Peridot; Jennifer Paz as Lapis Lazuli; Spencer Rothbell as Clarence Wendle; Sean Giambrone as Jeff Randell; Katie Crown as Mary Wendle and Ms. Baker; Eric Edelstein as Chad Caswell and Griz; Grey Griffin as Mandy, Frankie Foster, and Yumi Yoshimura; Candi Milo as Dexter; Tom Kane as the Talking Dog; Roger Craig Smith as Thomas and Belson Noles, and Courtenay Taylor as K.O.
 * Jeremy Shada as Finn, the main character of Adventure Time.
 * Thurop Van Orman as Flapjack, the titular character of The Marvelous Misadventures of Flapjack.
 * Raymond Ochoa as Chowder, the titular character of Chowder.
 * Chowder's original voice actor, Nicky Jones, makes a cameo as his original voice as to compare his current voice and regular voice to Finn and Flapjack.
 * Tom Kenny as the narrator of The Powerpuff Girls, who narrates throughout the film, with Chowder being the only one throughout said film who can hear him.
 * Kenny also provides the voice of the Mayor from The Powerpuff Girls, Eduardo from Foster's Home for Imaginary Friends, Simon Petrikov from Adventure Time, and Sumo Sumouski from Clarence.

Cameos include Alex Walsh, Mumy, John Omohundro, Ian Jones-Quartey and Sam Lavagnino as the Bravest Warriors characters.