On Thanksgiving, according to Garfield, people "celebrate food by eating as much as possible. It's a tradition, I love tradition." But that tradition is history following a checkup from veterinarian Liz, a sassy lady who's also the new heartthrob of Garfield's owner, Jon. The bad news is that Garfield must go on a diet. The good news is Liz agrees to come to Jon's house for Thanksgiving. Jon is in high spirits reading for his dinner guest, but Garfield is in the doldrums. He's facing a half leaf of lettuce for breakfast, contending with the goofy pooch Odie as his diet monitor and feuding with a talking scale that reads his weight and calls him Orson Welles. Co-written by "Garfield" creator Jim Davis. Lou Rawls and Desiree Goyette sings the musical numbers.