Charlie (Tom Bosley, "Happy Days") and his spunky 12-year-old granddaughter Casey (Jordy Benattar, the Spiderwick Chronicles) are best friends. They go to movies, play games, and share stories. Suddenly Charlie gets sick, and he realizes their time together is precious. He wants to teach his granddaughter so much, like how to play music, how to talk to boys... But Casey is also a great teacher because she knows how to have fun, no matter what. Her feisty spirit inspires her grandfather to live each day to the fullest.