Each morning Maya and her sister collect seashells, scrub them to a sparkle, and string them together, but when Alita throws away shells she deems too ugly, Maya, remembering words of her grandmother, turns the clunky shells into a helpful and beautiful wind chime.

A young girl visiting her grandparents at the beach stays in a little house and walks along the shore gathering seashells, wondering about the creatures who used to live in each shell, about the hidden treasures of the sea--and about the world.

The week of her tenth birthday, Alice and her parents go to Sanibel Island, Florida, just as they do every year, but this time some of the people who are always there are missing and some new people have come, which unsettles Alice, who wants things to be exactly the same as they alway are.

Every summer, when Sora's Halmoni, or grandmother, visits from South Korea, the two of them take the bus to the beach to search for seashells. While Sora likes to take all of them back with her, Halmoni always leaves the prettiest shell for someone else to find and treasure. As summer turns to fall, Halmoni returns home and Sora starts kindergarten, where some of the kids tease her about her "weird" name. One day, Sora's parents receive a sad call...