It is a summer day unlike any other Margaret has ever known. The Smith family have left the town where they live and work and go to school and come to a place where the sky is blue, the sand is white, and the sound of the sea surrounds them. An ordinary family discovering the joy of getting away for the first time. Over the course of the coming decades, they will be transformed through their holiday experiences, each new destination a backdrop as the family grows and changes, love stories begin and end -- and secrets are revealed.