At the end of the world, the soul-eating fog spread across Kyushu, and the Great Wall became China's last line of defense. Night watchman Lin Jin, who has been alone for three years, unexpectedly picks up the ruthless man from northern Shaanxi with a loud voice, and Chu Xiao, a boy from the northeast who is trembling with fear but has great ears. They exchanged dialects and laughed at each other along the way, but in the ruins, they were intercepted and killed by gangsters and betrayed by humanity. A group of seemingly unreliable actors and actresses defend the Great Wall and protect the refugees with their unique abilities. Underneath the laughter and curses, there is a bloody spirit that will not give in an inch of ground; at the moment of life and death, they all have the backbone of "Anyone who offends China will be punished no matter how far away". The road ahead was foggy, and they smiled side by side, but no one knew that every step was leading to a hot ending.