Aqua Teen Forever: Plantasm

Several years ago, Frylock moved out of the house in frustration. Some time later, Meatwad and Master Shake also had to leave and are now separated and homeless.

Frylock works at the IT department of megacompany Amazin, which is led by reclusive and diminutive owner Neil from his llama-shaped skyscraper Llama Dolly, rumored to be a functioning spaceship. One day Frylock is summoned to Neil, who explains that he wishes to become taller. He has a scientist assistant, Elmer, who had no success in that regard and who is shown (seemingly also without success) working on creating plants with humanlike intelligence. Neil requests Frylock to repair one of Elmer's stretching machines, but Frylock suggests DNA splicing to clone a larger version of Neil, who enthusiastically agrees.

Later that night, Frylock is attacked by muggers and badly mutilated, before he is rescued by Neil and Elmer. Since Frylock's old shell is destroyed in the attack, he is given a new metal shell by Neil and Elmer, who admire the crystal that is attached to Frylock and powers him. During his reconvalescence, it seems that a friendship develops between him and Neil.

After several failed experiments, Frylock is able to splice the DNA of a giraffe and former basketball player Shawn Kemp into Neil's, which creates an extremely tall clone. The clone calls himself Big Neil and immediately usurps Neil's position, locking him inside a wooden box.

Master Shake and Meatwad arrive in short succession at former neighbor Carl's house, asking to crash with him. Carl only lets them stay in his backyard.

Amazin has sent out scores of packages to addresses all over the United States. When Carl had tried to steal the packages that arrived in his neighborhood, he noticed that most of them are completely empty. Meatwad and Shake use the empty boxes to build provisional homes in Carl's backyard. When Carl's sprinkler turns on and soaks the boxes, they turn into plant creatures which attack and almost kill Shake, Meatwad and Carl. They are able to contact Frylock when they learn that he works at Amazin and try to warn him, but he is unwilling to hear their story. When Frylock returns to Amazin, Big Neil and Elmer fire all workers, two alien races called the Japongaloids and the Fraptaculans, who Neil had enslaved using the Llama Dolly, which is revealed to actually be a powerful spaceship.

Big Neil and Elmer plan to replace the aliens by the plant creatures Elmer has finally successfully developed by synthesizing Frylock's crystal. Neil comments that he only got close to Frylock to obtain access to his crystal and that all Amazin packaging consists solely of seeds, which develop into the creatures when they are watered. When a storm creates the plant creatures all over the land and they seem to overwhelm the humans, Big Neil fires Elmer and wants to kill the creatures with pesticide. Elmer consumes plant seeds and drinks some water to transform into a giant treelike human/plant hybrid, takes control of the plant creatures and attacks Big Neil and Neil, who flee in Llama Dolly.

Frylock rushes to Shake and Meatwad and helps them defend themselves from the plant creatures. When they are about to be overwhelmed, Carl arrives with his car and takes them in. They flee to Used Babywipe Mountain, the only place in New Jersey above the tree line, where they are safe from the plant creatures. Llama Dolly also arrives there and Frylock and the two Neils hatch a plan to exterminate the plant creatures: they will fly Llama Dolly to the Moon and push it in front of the Sun, which will deprive the plant creatures of sunlight and kill them. On the Moon their ship is attacked by the Mooninites' ship. When it is about to lose the fight, Fylock frees Neil from his box because he is the only one able to fully operate the ship. They defeat the Mooninites and push the Moon in front of the Sun.

While this is happening, Carl, Shake and Meatwad create a Mad Max-like car and attack the plant creatures with it. After some initial successes they are about to get overwhelmed, when the Japongaloids and the Fraptaculans join the battle, evening the odds. When the moon is finally pushed in front of the sun, all plant creatures, including Elmer, die, but the Earth starts to freeze over.

When the Neils return to Earth, they are immediately brutally killed by the Japongaloids and the Fraptaculans, who then ask themselves what to eat now that the Earth is freezing over. Carl mentions that the Aqua Teens are made of food, which leads to the Japongaloids and the Fraptaculans devouring them.

In a post-credits scene, a dying Master Shake is bitten by Markula, turning him into a vampire bat and screaming, "I smell a sequel!"

• Dana Snyder as Master Shake
• Carey Means as Frylock
• Dave Willis as Meatwad, Carl and Ignignokt
• Matt Maiellaro as Err and Markula
• Peter Serafinowicz as Neil and Big Neil
• Paul Walter Hauser as Elmer
• Natasha Rothwell as Japongaloid (Japongaloid Natasha)
• Robert Smigel as Fraptaculan (Fraptaculan Robert)
• Tim Robinson as Fraptaculan (Fraptaculan Tim)
• Kyle Kinane as Elric in IT
• Jo Firestone as Felicity in IT
• Lauren Holt as Liz
• Comedian CP as Stretch Instructor and Japongaloid (Japongaloid Chris)
• Blair Socci as Japongaloid (Japongaloid Blair)
• Shawn Kemp as himself
• Lavell Crawford as Street Tough
• John Wilson as Amazin' Board Member
• Jaime Meline as Street Tough
• Killer Mike as Boxy Brown

A sneak preview was shown at Adult Swim Festival in August 2022, and the film was confirmed to be released on Blu-ray, 4K Ultra HD and digital on November 8, 2022.[15]

The film made its streaming premiere on Max on February 8, 2023, and premiered on Adult Swim on March 19, 2023.