When Shen Zhao was repairing a thousand-year-old tomb, the thirteenth burial object, Yu Jiuniang, a mute female ghost in a bronze mirror, suddenly woke up. As the whispers in the mirror grew louder, the runes on her left arm began to swallow up the living person's yang energy. Bai Shuang, a descendant of the tomb-keeper clan, Qin Ya, a mute craftsman, and Su Huai, a mysterious broker, appear one after another, each with their own agenda. And the girl Mo Tong who always whispered "Sister, don't cry" in her dreams was actually the initiator of the blood sacrifice that year. When the seventh coffin cracked, Shen Zhao finally understood: she was not the one to break the seal, she was the last sacrifice that should be buried in it.
