In 1935, when her mother gets a job housekeeping for a woman who does not like children, eleven-year-old Turtle is sent to stay with relatives she has never met in far away Key West, Florida.

Sunny Lewin is sent to live with her grandfather for the summer in Florida, where she befriends Buzz, a boy completely obsessed with comic books, and faces the secret behind why she is in Florida in the first place.