It's 1962, and thirteen-year-old Reenie Starr comes alive the minute guests begin to arrive at her family's summer resort. She dreams of the day she can run Sandy Shores, and she spends her time helping out at the resort, swimming, climbing trees, and singing under the stars. One day, Reenie's mother announces that she thinks the resort could use some entertainment. She invites Gwen, her best friend's almost-grown daughter, to come and teach a dance class. Although Gwen seems sad and remote, Reenie's thrilled to have her there. As Reenie starts to learn more about the world beyond Sandy Shores, she comes up with a plan that could really put it on the map. She also finds herself caught between the simpler world of her childhood and all of the wonderful new discoveries (boys) and heartaches (boys) that growing up can bring. Reenie thought she wanted Sandy Shores to never change, but after this summer nothing will ever be the same again.