A scarred expedition team was hired to delve deep into the legendary "Nine Nether Chains" that connect the earth's veins - a series of terrifying tombs beyond human understanding. The former special forces soldier **Lei**, the cursed scholar **Lin Feng** and the wheelchair genius **Aya** struggled to survive in the stone marrow tomb where "living stone eats flesh and blood", the echo labyrinth that distorts the senses, the flesh and blood hotbed that desecrates life, and the hanging altar that subverts time and space. They discovered that these tombs were the terrifying creations of a fallen prehistoric civilization, and their ultimate purpose pointed directly to the abyss of the universe. As the exploration deepens, the pollution of the ancient tomb erodes reality, the team members' sanity collapses, and human nature is torn apart by fear and temptation. They must uncover the horrifying truth and prevent the sleeping "Eye of the Abyss" from waking up before they become part of the horror. This is a dark epic that crosses the boundary between life and death and challenges the limits of cognition.