The peaceful days suddenly changed drastically. 100 cities around the world suddenly dropped large-scale artificial buildings of unknown civilizations, and the earth entered the countdown to destruction. The birthplace of human beings and the cradle of human civilization are at stake. Unknown civilizations choose one of the 7.6 billion human beings, and he will bear the burden of the entire human race. The fate of civilization, as well as the future of the entire earth's creatures, embarked on a struggle to the end.