Fillbert wiggles onto the warm golden beach. Barnaby the Hermit Crab scuttles right beside him. "Big mission!" says Fillbert. His scout sash has an empty spot for a new badge. The Sandy Castle Badge! The ocean waves go swish-swish. The tide is far away, but it creeps closer and closer. Wiggle, pat, scoop! They must build the tallest sandcastle in the whole wide world before the water arrives!