Miles peers out of the front window of his house, waiting excitedly for the mail to arrive. He knows the surprise box his YaYa sent is arriving today. Miles and YaYa live far from each other and don't see one another often, but that doesn't stop them from having adventures. YaYa carefully chooses the surprise box items and lovingly packs them for her grandson. Miles sees the mail truck down the street and watches in anticipation as it pulls in front of his house. The box is placed in the mailbox. He squeals delightfully and asks his dad to help him get the mail. As he crosses the yard and climbs up the porch steps back into the house, he carries the box as though it is the most special package ever received by anyone anywhere. He sits on the living room floor and examines the box. He notices YaYa has drawn a turtle, a sandcastle, and a bunch of seashells on the outside. Miles opens the box and is met with the sweet face of a stuffed sea turtle. As he digs deeper into the box, he finds a pail and shovel. He knows YaYa sends him three things in each surprise box, so he knows one more surprise is waiting for him. At the bottom of the box is a delicate bag of beautiful sea shells. He looks at the turtle, pail, and shells and knows precisely the adventure they are taking together. YaYa and Miles are headed to the beach! He can hardly wait to run through the water, build a sandcastle and hunt for the perfect shell. Miles wonders why YaYa included a stuffed sea turtle but knows the adventure has just begun. He can't wait to spend the day at the beach with his YaYa!