After the "Guzheng Operation", criminal policeman Shi Qiang, who suffers from leukemia, and scientist Wang Miao teamed up again because of the theft of nanomaterials. As they investigated further, they found that this was not a simple theft, but a shocking conspiracy set up by a mysterious organization to destroy human unity. When they were close to the truth, Shi Qiang and Wang Miao had a huge rift due to their different ideas, but in the end, they resolved their differences because of their firm trust in each other. They persisted in their pursuit of truth and truth, breaking through the fog and solving another crisis facing mankind.