Since prehistoric times hundreds of millions of years ago, humans have always believed that there is only one Earth in the solar system, that is, there is only one planet with life. However, in the late 21st century AD, astronomers gradually discovered that there is indeed another "Earth" in the antimatter space of the solar system. This planet, which is almost the same as the Earth but completely different, has technological power that is more than a hundred years ahead of the Earth. As a result, they discovered each other a hundred years before the Earth and attempted to invade. Through the explosion of science and technology, the planet opened up a quantum channel between the two spaces, and sent starships to lurk on Mars. They used unconventional means to make the fleet "invisible" and dormant on Mars for twenty years. It was not until the spies sent to the Earth thirty years ago and successfully entered the center that they dropped a large number of imitation viruses in many developed countries on the planet, causing one-third of the world's population to die from being infected with genetically targeted viruses after their genes were identified. This fleet did not begin its invasion plan. The people on earth, who were unprepared and in the midst of a disaster caused by the imitation virus, were devastated and their population dropped sharply within two years. During this period, many government leaders from various countries died in mysterious circumstances. After that, the earth abandoned its national conflicts and formed an alliance to jointly fight the crisis. And just ten years after the surface of the earth was occupied and the people on earth had to hide underground, the appearance of a man changed the one-sided situation of the war...