Supernatural detective Li Chengfeng originally wanted to be a relaxed "small case expert", but he was dragged into the big stage of Hundred Ghosts Night Walk by a series of strange things. Partner Su Xiaoqiu doesn't believe in ghosts and gods but is slapped in the face by reality. The two quarrel with each other. When visiting various weird and supernatural places such as "ghost market" and "underworld canteen", they encounter humorous ghosts, strange girls, mysterious villains and many other characters. Behind every bizarre case there is human warmth or ridicule. The three volumes of stories are intertwined, from the "urban supernatural case" to the "life and death disaster between Yin and Yang", and finally reveal the secret of human nature behind the night walk of a hundred ghosts. Along the way, he fights monsters, loses his virginity, grows up and laughs, Li Chengfeng gains friendship, love, and completes self-salvation.