Little Grey Rabbit lives with Squirrel and Hare in a little house on the edge of a wood. It's going to be Grey Rabbit's birthday on Midsummer Day, and Squirrel and Hare are planning a wonderful surprise for her. They've invited all their woodland friends to a birthday party, and are making a birthday cake, all by themselves! But they are keeping it a secret from poor Grey Rabbit, who feels very left out. She'll just have to wait and see.