For Henry and his big dog Mudge, summer means going on a picnic in the park, taking a bath under the garden hose, and going to the top of the big green hill.
When a mother robin builds a nest on Annie's porch, Annie can't wait to show her favorite cousin, Henry. Every day they watch the nest grow bigger and bigger. One day five small eggs appear. But it is not easy to wait! When will the baby birds hatch?