This book tells the story of the important role flies play on Earth and what we would lose if they were to go extinct. It’s a picture book that offers support for even the smallest, seemingly insignificant creatures, reminding us that every living thing has a purpose. The flies we most commonly see are houseflies and fruit flies. The typical housefly, often called a dung fly, spends most of its time in waste, including human and animal excrement. As they move around waste, harmful microorganisms stick to the hairs on their bodies and legs. This is why flies, like mosquitoes, are often considered pests that spread diseases. However, flies surprisingly have a useful role in agriculture, where they help pollinate crops to produce seeds. The picture book introduces these facts through charming illustrations of various fly characters.