The balance of the three realms was broken, and the forces of the underworld penetrated the Yang world. Those with "yin bones" can travel between yin and yang, but this will lead to disaster. In order to consolidate his rule, the King of Hell needs to marry someone with a special destiny in the Yang world; in order to break through the ten thousand-year limit, the King of Hell in the underworld needs to devour the souls of nine people with Yin bones. As the most perfect carrier of the "Nine Yin Mysterious Bones", Tang Xiaojiang is both a sacrifice and the only key to overthrowing the rule of the King of Hell...
