In 2055, zombie viruses broke out globally. Except for arthropods, all other animals cannot escape the infection of zombie viruses.
In 2056, nine human bases were completed
Humanity abandoned the city and hid in human bases.
The African base fell in 2057
In 2058, the South American base and the Ocean base fell.
The Arctic Ocean base and the Arabian base fell in 2059
Fall of Western European base in 2060
The southern base fell in 2061
The only remaining human bases are the Northern Base and the Pacific Base.
Where will mankind go?
Purpose: We must protect the environment, otherwise nature will bite us back