Super solar flares erupted and high-energy radiation caused a global catastrophe. More than half of all living things on the earth were almost extinct. Under solar radiation, humans could only live in shelters built by major countries. Energy shortages led to technological regression, and wars continued for supplies. Humanity faced an unprecedented survival crisis!
Solar radiation also causes some survivors to begin to experience physiological changes, including increased radiation tolerance and the awakening of some special abilities. As more and more awakened people appear, the world quietly begins to change, and a struggle for power and calculation ensues.