Evangeline Evershine is a bright and curious young girl who questions many things about space and heavenly bodies.

In the first book about Evangeline, she questioned the nightly disappearance of the Sun.

In this book, she shifts her curiosity and questions to the movement and the daily disappearance of the Moon.

Fortunately, her father is an astronaut, and so together they travel through space and learn much about these heavenly bodies.