Meet Moon and a little girl, Lucy, in this illustrated storybook that teaches young children about the importance of the Moon and how valuable each of us really is. Space can be lonely, so Moon likes to watch people down on Earth. There's just one problem: when Sun is out, everybody on Earth is happy to see him, but when Moon is out, everyone goes to sleep. This makes Moon upset. What Moon doesn't know is that little Lucy loves to look up at Moon, and one clear night she sees that Moon has disappeared. Can Lucy find Moon and will Moon learn just how much everybody actually loves her?