A series of strange "crystal beast" injuries occurred in Zeyuan City, and the conflict between the new martial arts sect and the ancient warriors suddenly escalated. Police elite Lan Yanlin was ordered to investigate, but he repeatedly clashed with the key figure in the case, the talented engineer Shi Sihan. He didn't know that she was the only hope to alleviate the backlash of his bloodline; she also didn't know that the secrets his family had guarded for generations were closely connected to her life experience.
When the rift crisis breaks out in full, the two men, who symbolize conservatism and innovation, are forced to join hands. On the top of the fog-shrouded city, they must answer together: Facing an abyss that can swallow the world, should they stick to their thousand-year vows, or embrace an unknown future? And where will the affection that quietly grows between the two go in the shadow of the approaching doomsday...
