The rapid development of the second-tier riverside city hides the difficulties and dusty old cases of the old urban area under its prosperous appearance. Chen Mo, a 32-year-old ID agency shop owner, was originally a low-level person who just wanted to live a stable life. On a rainy night, a strange man left a locked old iron box and drowned mysteriously. Two groups of people came one after another and threatened him, completely breaking his peace. In order to protect himself, Chen Mo pried open the iron box and found that inside it was the key evidence in the "accidental death" case of state-owned factory worker Lin Jianjun twenty years ago. He was forced to get involved in the puzzle and followed the clues, pointing directly at the current leading real estate group. He was in danger of life and death several times, and it was difficult to distinguish between friends and foes around him. Just when he thought he had uncovered the mastermind of capital, the truth was completely reversed. The real culprit turned out to be Lin Jianjun's closest brother. An unsolved case that seemed like a game of capital was actually a tragedy caused by human greed and betrayal. Chen Mo was eventually reduced to a pawn of revenge, leaving him filled with sorrow and elusive peace.
