Ten years ago, an unjust case of arson at the wharf forced young detective Chen Yan to personally force innocent worker Zhang Shun into a desperate situation, and transformed himself from a rising star in the police world to a self-exiled detective. He lives in guilt and alcohol, and the scar on his brow is a mark of lifelong regret.
Ten years later, a chained corpse emerged from the bottom of the river. The deceased was Zhang Shun's son Zhang Lei. A seemingly neat gang vendetta is full of carefully planned weirdness. Chen Yan was involved and faced the most gentle yet ruthless man in Jiangdu - shipping tycoon Shen Jinghan.
He is a philanthropic celebrity in a white shirt and gold mirror, and is also the leader of the underground order in the dock; he is ruthless, but he sticks to the bottom line of not using drugs or harming civilians. All his struggles and sins are just to give his seriously ill sister a chance to survive.
As the investigation deepens, the shadows of the old case return, including scapegoats, ledgers, gangsters, revenge, kidnapping... Layers of shady curtains are torn apart, and a conspiracy that has lasted for ten years has surfaced.
A former policeman burdened with sins, a tragic villain who has fallen for family love, in Linjiangdu shrouded in fog, turned from a life-or-death rival into a temporary alliance.
When the truth emerges, there will finally be a distinction between good and evil. Some people spend the rest of their lives atone for their sins, some people redeem themselves by persevering, and some people wait at the end of darkness for the river breeze to blow in their faces and the dawn to dawn.
This is a story about crime and punishment, obsession and redemption. When the fog clears, justice will come.