The sameness of everyday life sometimes breeds discontent and Garfield is bored with his life in Cartoon World and sick and tired of reporting to work at the Comic Strip Studio every day with co-workers Wally, Billy Bear, Randy Rabbit, and Bonita. When Odie accidentally drops his bone through a patch in the screen that separates the realm of Cartoon World from the Real World, Garfield impulsively decides to dive headlong into the land of hot dog vendors...

One minute, Garfield and his pals are having a cookout, the next, they're engaged in a super battle with a sinister alien and her army of zombies. When an evil comic book demoness tries to make everyone in Cartoon World her slaves, all the comic strip characters become superheroes in order to thwart her. Well, everyone except Garfield that is. He thinks being a superhero sounds too much like work. But when he sees all his friends in trouble, the fat...

It's the annual talent competition and Garfield wins it every year. This year, a handsome new contender threatens to unseat the fat cat. In desperation, Garfield sets out on a journey to rediscover the meaning of funny. He then returns to the Fun Fest to duel his adversary in an outrageous talent showdown. In the end, Garfield learns the importance of just being himself.