The earth's core fissioned, civilization collapsed, and beneath the cold abyss was mankind's last fire - a quantum ark buried deep in the earth's mantle. Li Jin, the former king of special forces, sneaked into the frozen wasteland alone with the key entrusted to him by his sister on her deathbed; Shen Jinchuan, once the chief engineer of Ark, was expelled from the core layer due to betrayal. When two burning wills meet in the abyss of absolute zero, one wants to take back the fire, and the other wants to burn the old world. They are not allies, they are each other's only way to survive. There are no reinforcements, no light, only the resonance of heartbeats and gears, silently hunting against the tide of mechanical corpses awakening in the cold abyss.
