It’s Halloween and Garfield has dressed up as Catzilla, a fierce wild cat, to go out trick or treating. He has painted stripes on his fur and added false teeth to complete his disguise. But what he doesn’t know is that the real Catzilla has escaped from the zoo, and the neighbors are terrified of running into him.
Garfield is busy trick or treating and is going from door to door to collect candy. A siren sounds ; it’s the police and they’ve surrounded him! They catch him and take him back to the city zoo. But it’s a case of mistaken identity: they have mixed up Garfield with the real
Catzilla, who’s out and about too : he’s even gotten into Jon’s house! Somebody better discover the truth soon and free Garfield, otherwise he may end up in a zoo in Siberia.