In the 40th century, the Antarctic continent's glaciers had completely melted. A virus hidden deep in the glaciers came to the human world without holding its breath. It multiplied crazily in the bodies of animals, destroyed their nervous systems, and turned docile animals into ferocious beasts. The mutant beasts began to attack the human world, and human life was at stake. At the moment of crisis, the Human Science and Technology Research Institute developed a drug-rebirth fluid. They distributed the drug to a few survivors. People injected the drug into themselves, and they obtained a kind of spiritual energy-Nirvana energy. Such people are undoubtedly supreme. They are called demon slayers. In order to save mankind , a man named Xiao established a base, the Nirvana Base. He brought together people with Nirvana energy around the world. They rose up to resist and hunted mutated creatures. Finally, with their efforts, they repelled waves of Warcraft. After repelling the Warcraft, 33 Nirvana Base branches were established. Each base has a large number of towns and is home to survivors.
Purpose: Protect soil and water and improve the ecological environment