Ray Pelletier just wants to spend a pleasant and relaxing weekend ice fishing with his family. Alas, Ray's plans are ruined by the unwanted presence of the obnoxious big city father and son duo of Steve Cote and Stevie Jr. However, the two squabbling families are forced to set aside their differences and work together after a vicious monster awakens from the cold waters of the remote frozen lake area they are staying at.

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.