Ye Chen accidentally got involved in a secret fight against the ancient underground dynasty because of a jade domino engraved with the coordinates of Youling hidden in his grandfather's relics. He, Qin Jin, Shen Shuang, and Tao Jiu formed a temporary tomb-exploring team, and were entrusted by the Shadow Sect to go deep into the Youling ruins located in the mountains of the southwest. However, the deeper you go, the more you discover: not only are there traps that have been intact for thousands of years, but there are also people. Someone entered Youling earlier than them and stayed inside. As the eight-volume story progresses, the truth is revealed layer by layer: Youling is not a tomb, but a living prison, which holds a group of people who mastered forbidden knowledge in ancient times. They are not dead, but are kept in a state of "between life and death" by the Dark Seal technology, waiting for someone with pure blood to unblock it. And Ye Chen was exactly that person.