The story of this game takes place in a border town in the 1980s. Our protagonist Li Minglai is involved in an important operation. He runs into a series of strange things and finds his beloved wife missing when he comes home. Where used to be warm and sweet is now full of mysteries, which lead to a place called YinYang Street. Is this a coincidence or a conspiracy? Li Minglai has no time to think about it. All he could do is rush to YinYang Street and explore the bottomless abyss...