Earth is safe, all of the invading forces were killed or captured and the portal was sent into the sun where it could not be used. This does not stop the shimmer ships that made it across right when the portal opening from doing their job. Their job of course is to quell all resistance they find in the solar system to pave the way for the rest of the force they assume will be following them. Charlie and his friends must use all of the knowledge they learned fighting their last battle to overcome their new foes. In a battle that crosses many solar systems and involves numerous intelligent lives of all types Charlie and his friends work to keep to save the lives of everyone on Earth and even to try and save some of those that are attacking them.