Grand Avenue stars Kate Macfarlane, an avid sports fan who powerwalks to stay in shape. Not your typical cookie-baking granny, Grandma Kate has her hands full with her terrific twosome, who are best buddies even though their personalities clash. Gabby is an ambitious, newspaper-reading little girl who plans to become a billionaire before she's 30. Her brother Michael is a more sensitive soul who prefers riding his skateboard or performing scenes from Shakespeare to just about anything else.