In the 25th century AD, animals and plants were extinct due to environmental problems on the earth. One night, the top of Mount Everest was struck by a huge bolt of lightning, which immediately released a large amount of ionized substances. The microbial "aftermath" became extremely active under the action of the ions. The active aftermnants continued to spread in the air and quickly spread around the world. Because humans have "Leji" antibodies, the disease cannot cause harm to humans, and no other animals and plants are immune. The animals and plants infected with the disease have undergone astonishing mutations, and the animals infected with the disease have become extremely ferocious. They have begun to attack humans on a large scale, causing panic around the world. Humans and animals have launched the largest war in history. All kinds of heavy weapons have been dispatched. The war is about to break out. Smoke is billowing around the world, disasters continue to ferment, the number of surviving humans is gradually decreasing, and the fate of mankind is plunged into darkness.
Purpose: Protect the environment