Sunshine Lewin, or Sunny as she is known to her family, is sent to spend the summer in Florida with her grandfather. Sunny’s vision of trips to Disney World and hanging out with other kids at the pool changes quickly when she discovers that her grandfather lives in a retirement community. There aren’t many kids around and the “big plans” her grandfather has for her each day include trips to the bank and the grocery store. Sunny is facing a summer of complete boredom. Through flashbacks, we learn that Sunny has been sent to her grandfather’s while her parents deal with a family issue. As the title suggests, Sunny does her best to keep her sunny side up and enjoy her exile in Florida.