Max and Ely are two little boys working hard to get the moon to stay in place. They send a rocket up to try to lasso it, they even try to scold it into submission. Each night the moon comes and goes, bringing closer the day that Ely must leave for the hospital.
A word to the wise, this book is not for the faint of heart. It deals with what happens when plastics end up in the ocean and it does not pull any punches.