The main character is a little boy who wants to play with his dog, Digby. However, his mother tells him that Digby is too old to play games like catch. She explains how long the family has had Digby and reminisces about the games that Digby played with her when she was a girl. The boy finally comes to understand why Digby can't play anymore and to appreciate him for the things that he can do, like watch, listen, and understand. He also watches the boy and his mother play catch. In the end, every member of the family has a role and feels satisfied. I think that kids can relate to this story and actually understand a message.