How do you cheer someone up when they're stuck in a boring old hospital bed? Cora is determined to find a way. Grandpa Jim can only see a small square of blue sky from his hospital window so Cora decides that there's only one thing to do, she will bring him some sea to go with it. Soon, she returns with a hat full of sea, and then a hat full of countryside, and then a hat full of fun at the fair, emptying them out onto the hospital bed for her beloved Grandpa Jim to share. Can Cora bring the hospital ward to magical life until her grandpa is ready to go outside and play with her once more? A heart-warming story about the power of one girl's imagination, the strength of her determination . . . and a very special hat.