Titan

When human technology just entered the planetary age, an extraterrestrial visitor opened a hole in the isolation barrier of the solar system and descended on the earth, and a war broke out between the two sides. In just a few days, human dominance was shattered. Death hung in the air, mixed with the scent of despair. As each country is destroyed, the entire world is facing collapse. In the end, the whole world reached an agreement and secretly built a spaceship to leave the earth and go to other habitable planets. But the invasion of this extraterrestrial visitor is not over yet. They have begun to collect the earth's water, soil, animals and plants, including humans. Just like this, two months have passed, and the world has gradually become quieter. The surface of the earth has long become a wasteland, devoid of any life. As for that extraterrestrial visitor, you left this planet and drove towards the distance. And the human base hidden hundreds of thousands of meters underground is... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.