Twin sisters Mac and Madi are headed to the shore. Their bags are packed, and they have their books in hand. When they reach their destination, they are excited to explore. Sandcastles, swimming, and shells occupy each day—and, of course, meeting people along the way. But one day, something exciting happens. They meet an older, wiser woman, and her questions change even their own perspective. Join Mac and Madi on their adventure and see what happens at the shore!