Crescent is about Crater. He is starting to fight the crowhoppers, but when the crowhoppers are almost all killed, one crowhopper is left and Crater doesn't have the heart to kill it. The crowhopper tells Crater that their base is over in the hatch. Crater checks the hatch, and a very tiny crowhopper jumps out to kill him. Crater manages to take the crowhopper hostage. Crater soon learns that the crowhopper is a girl, but everyone else thinks she's an animal. Her name is Crescent (like the book). Crater saves Crescent from death and travels across the moon, helping himself and his friends at the same time to save the moon.
This book was a very good sequel to Crater. The author did an amazing job with details and an amazing job with the plot. I don't think that there will be another book in this series though. I loved how the crowhoppers aren't supposed to feel emotion, but Crescent is able to feel emotion. Anyone looking for a good read look no further. I hope you will love this book as much as I have.