In the not-too-distant future, the earth will be devastated due to environmental damage caused by industrial pollution. Hua Dan's hometown, Wuran City, is surrounded by smog, and a creature of unknown origin - the fog spirit - has taken over.
Jiang Xiaonian, a young man from the future, returned to the 21st century, found Hua Dan, and together they drove away the Wuling and restored Wuran City to its original state. But none of them expected that the earth would not only face the invasion of fog spirits.
How to return to the memory of green mountains and clear waters?
Purpose: Environmental protection, preventing global warming