When Garfield and his friends are trying to enjoy a barbecue, little do they know that in a very different universe a battle is being waged! In a comic book world of heroes and villains. Garzooka and his trusted team of super-powered heroes, the Pet Force, must defeat the evil Vetvix, who is turning the inhabitants of their world into mindless zombie slaves! When the Pet Force falls into a trap set by Vetvix. it's up to Garzooka to enlist a new breed of superheroes. Crashing the barbecue, Garzooka recruits Garfield and the gang. Will this new Pet Force stop Vetvix? Will Garfield ever be able to finish his barbecue?