Seven hundred meters underground in a bombed mine, Kaneda and three other miners discovered a strange corpse with green body, three horns and three eyes. Homura Roku speculates that it fell from the sky and was related to cosmic rays. The Special Criminal Investigation Team arrived to investigate, but during the autopsy the body suddenly came back to life and escaped. After that, a bizarre transparent wall incident occurred in Shirone Village, blocking people from moving forward. Homura was criticized for putting forward the idea of space war, but he also gained support from some people. Captain Ryuzouji Soldier Cao disappeared while flying in the stratosphere, and Lieutenant Yamagishi asked Homura for help. In order to find out the truth, they formed a space war research class and drove a jet boat into the stratosphere for reconnaissance. However, they encountered a "magic space" and were imprisoned by the green Mimi tribe. How will they escape? What is the purpose of the Mimi tribe?
