In the future world, an alien passage appears on the back of the moon. Human beings integrate intelligent external brains into warriors, develop special energy, and become new types of warriors to guard the alien passage and prevent alien invasions. After continuous development, the warriors who integrated the outer brain eventually formed the moon force, which was independent from the earth. At the same time, they blocked all news about other worlds and new technologies, making the earth peaceful, and at the same time lost the opportunity to develop space. The people on the moon discovered a new planet with life, and were no longer willing to protect the alien world for the people on earth. They prepared for the great migration, but it took time and troops to intervene, so they made a plan to improve the overall strength of the earth.
