The adventures of two unlikely friends. Big announces that his celery is ready to be picked. Small thinks this is a cause for great celebration and announces that it is Celery Day! And Big should write a song in honour of the crispy vegetable. Big starts to write a song but unfortunately gets stuck after the first five notes. However hard he tries he just cannot reach note number six... Small decides to help his friend by dressing up as a figure of inspiration - a celery costume, to be exact! But this doesn't work, either, and it looks like there will be no song. So Big and Small decide to eat the celery anyway. But as they crunch away happily the crunching inspires a tune and soon Big and Small are singing out the best ever Celery Day song!