Casey Baker (Jordy Benattar) is a 12-year-old girl whose best friend is her grandfather, Charlie (Tom Bosley). Charlie has been like her surrogate parent since she was 4 years old, when Casey's mother died. Her still-grieving father, Jeffrey (James Gallanders), has kept his distance. When Jeffrey is away on a business trip, Charlie has a heart attack, and Casey finds herself alone making some critical decisions for her grandfather.