Pip is a seed from a glorious tree, and Egg is a bird's egg from a nearby nest. When Pip and Egg first meet, they are almost the same size and shape - like two peas in a pod.

But as their friendship grows, so do they - for Pip this means growing roots, but for Egg?

Well, Egg grows wings, and she can't wait to use them. Though Pip wishes he can follow Egg on her adventures, his roots are strong.