Summary

Chapter 20 begins the actual combat against the aliens the book has been leading up to. The eight on Moon Base Alpha (MBA) commence to fight with their drones. They are outnumbered and very quickly overtaken. The base is compromised with enemy. Shin and Milo stay on the base to allow the others to evacuate. They are killed. The others are in a capsule hurtling down the tunnel towards the emergency bunker. On the way, Graham is killed. At a point when the whole capsule is about to be crushed, Lex saves them with a drone. Then, she is off to fight in Shanghai. MBA is destroyed and the five who are left get to the emergency bunker where special manned Aerospace Interceptor prototypes await them. They get into these and head to earth.

On earth, they fight the Disruptor—the enemies secret weapon...