Nothing in the world can make Garfield get involved in anything besides eating, until the muscular super cat Garzooka comes crashing into Cartoon World from the Comic Book universe with terrifying news. Garfield summons up the willpower to join his superhero Garzooka in a fight to save their worlds. On the planet Dorkon, Professor Wally shows Emperor Jon his new invention, The Moscram ray gun, a device powered by the Klopman crystal that can scramble inanimate objects and organisms into new creatures under the user's control. But Emperor Jon is concerned about finding a wife to continue the royal bloodline. Soon a warship lands outside the palace. Emperor Jon sees Vetvix, and asks her if he can marry her. She agrees, but only because she wanted to steal the Moscram Ray Gun. She zombifies Emperor Jon's guards.

Welcome to FunFest the annual talent competition for the funniest comic strip in Cartoon World. As you can probably guess, a certain lasagna-loving, tubby tabby wins it every year. So why should this year be any different? Well, there's a new contender, that's why. Garfield's Fun Fest is a 2008 CGI movie starring Garfield. It was produced by Paws, Inc. in cooperation with The Animation Picture Company and distributed by 20th Century Fox Home Entertainment. It was written by Garfield's creator Jim Davis as a sequel to Garfield Gets Real. The DVD was released in stores on August 5, 2008. It was followed by a third direct to video film, Garfield's Pet Force, in 2009.

Follow Garfield behind the scenes in Cartoon World where he grows bored with his life as a comic strip star. Garfield (Frank Welker) lives with canine Odie (Gregg Berger) and Jon (Wally Wingert) in a what appears to be a suburban town inhabited by cartoon characters (known as Comic Strip World). Garfield and the gang work at Comic studios with other comic characters. The comic strip is made in Comic Strip world, and sent to "The Real World" where it is made in the newspaper. Garfield is tired of the same old jokes his friends crack and is bored with life in Comic Strip World and longs to go to The Real World. The Comic Strip requires a bone for Odie, but Odie does not want to give back the bone, and looks for a place to hide it. But he accidentally makes the bone go through the screen in the studio and it is sucked into the Real World.