The shy, little firefly is reluctant to shine his light too brightly as he flits around the deep, dark backyard. He's afraid he'll become another creature's tasty, midnight snack. But as the firefly navigates the night, he turns up his light just a little to be able to see his way around. As he does so, he unknowingly helps many creatures by doing what comes naturally to him.

A picture book for children, The Deep, Dark Depths of the Backyard explores what a firefly might experience during the night hours in a little girl's backyard. He discovers the more he shines his light to help others, the more they are able to make their way through the backyard. And as he rests in the early morning hours, he notices the brightest light of all.