In the humid and foggy Qingmao Town, veteran policeman Zhou Ping deals with trivial matters day after day.
Until a series of seemingly ordinary cases tore apart the illusion of peace one after another - corpses being exchanged in the funeral parlor, and only footprints with no return on a rainy night...
He always wanders on the boundary between human feelings and legal principles, but because of this, he can touch the undercurrent beneath the surface better than anyone else.
This time, he faced not only a cold puzzle, but also a naked human heart beneath the warm surface.
