Maybe I am reading too much into this book, but here goes. Fern loves her Nana. She is a happy, baker with a wonderful cat. Nana and Fern spend many happy days together. This part of the story is bright and colourful. But, when poor Nana loses her joy, Fern is worried about her and does not know what is wrong. It looks to me, like Nana is having some depression from aging perhaps. Fern asks her mom what joy is, and then she goes to the park to catch some joy and bring it to Nana. Try as she might, she can't catch the joy she feels when she hears a baby laugh from being tickled or when she sees ripples of sun sparkling on the water in the duck pond. When they leave the park and go to grandma's, Fern tells her all about the Joy she found at the park. This makes grandma happy and the colours return to the story. The next day, Fern pushes grandma in her wheelchair to the park and they find Joy together. Read this delightful story with a child or as an adult... you will enjoy it either way. The message about finding Joy in the little things and sharing your joy with others is easy to see. The illustrations match the story so well. When Nana is happy, the illustrations are bright, colourful and fanciful. When she is not happy, the illustrations are dark, bland and sad looking. I love how this is so in sync with the story. A great book for children with grandparents to understand how important spending time with them is. The publisher, Quarto Publishing Group - Frances Lincoln Childrens generously provided me with a copy of this book to read.