Garfield is about to learn who stole the Klopman Diamond when the TV goes dead yet again. Jon calls the repairman, but the TV won't be fixed for a few days. In order to soothe Garfield, Jon gets his grandmother's old TV from the garage. Garfield gets it to work but the only show playing on every channel is Dr. Goodiegoodie, a show Jon used to watch as a kid. But something is very strange about Dr. Goodgoodie.