Cheng Mo never thought that he would inherit a strange pawn shop that only opened at midnight. Before his death, his grandfather gave him a copper key and told him to "do business at all times, live as if you were dead, and take care of your destiny." But when he stepped into this dilapidated "Yin Yang Pawn Shop", he discovered that the business here was much more than just pawn items - the living were pawned as objects, the dead were pawned as souls, and a series of strange things followed... Cheng Mo discovered that his life experience did not seem to be that simple. While uncovering the mystery of his life experience, he also gained friendship.
