A report exposed that the renowned corporate giant JuLun Group in Canghai City has covered up the truth about a mining disaster that occurred years ago. Deputy Director Qu Jianghe (played by Pan Yueming) becomes the focal point of the anti-crime and anti-evil campaign. When he gets involved in the investigation, he realizes that the line between right and wrong in reality is no longer clear-cut. Due to various interests at stake, his opponents, friends, and even his superiors all demand the concealment of the truth. The newly appointed female director Yan Ge (played by Chen Shu) is also shocked by the harsh and heroic reality. Covering up is a greater evil than the crime itself....

In 1986, 20-year-old Chen Baojin came to the Altai region to find his brother who was missing in the gold rush. He was tangled between life and death in the complicated environment and was also trapped between many forces. At the same time, strange things happened one after another. After layers of uncovering, the clues all point to the mysterious place with huge treasures and no survivors—Sister Sea. He struggled with people and nature, and finally discovered the mysterious "Well No. 7“ in the Sister Sea, and found the truth about the disappearance of his brother. He then realizes bravery and kindness are the greatest treasures of mankind....

A report exposed that the renowned corporate giant JuLun Group in Canghai City has covered up the truth about a mining disaster that occurred years ago. Deputy Director Qu Jianghe (played by Pan Yueming) becomes the focal point of the anti-crime and anti-evil campaign. When he gets involved in the investigation, he realizes that the line between right and wrong in reality is no longer clear-cut. Due to various interests at stake, his opponents, friends, and even his superiors all demand the concealment of the truth. The newly appointed female director Yan Ge (played by Chen Shu) is also shocked by the harsh and heroic reality. Covering up is a greater evil than the crime itself....