The Deep Sea Fog of the Apocalypse

In 2035, extreme weather continued to occur across the country. A series of disasters such as high temperatures, wildfires, heavy rains, earthquakes, zombies, etc. Followed one after another. Fu Xiaoyu, a student in Y city, was involved in a disaster because of a dream. In his dream, he saw an ancient and mysterious creature. Is this creature the key to saving the earth?