In the 21st century... Human civilization is moving towards another level. People have begun to develop biochemical weapons, unknown viruses, nuclear weapons, and advanced science and technology. The earth has begun to be unable to cope with this rapid development. Several holes have been pierced in the ozone layer. Global warming has intensified. There are more and more natural disasters. Volcanoes that have been dormant for many years are awakening again. Winters are getting shorter and shorter. Droughts, hailstorms, wind disasters, etc.
With insufficient food, countries began to wage wars against other countries, and the Third World War began, making people's lives even more difficult.
On X, month, 20XX, the people who survived called it the end of the world. There are only a few dozen people left in the world, most of the animals are extinct, some parts of the land have become a place of death, exuding poisonous gas, and there are more mutated creatures.
This week there are only a few places left inhabited by humans. The world government has established an army called "Speranza". The Italian word Speranza means hope... The surviving people must live with hope...
But Doomsday is an experiment by a group of scientists...!!