Disappearances occur one after another in the coastal city "Fog City". Reporter Shen Zhiwei received an anonymous letter with a postmark ten years ago, in which the name of the next missing person was accurately written. She teamed up with Gu Chen, the criminal police officer in charge of the old case, to investigate, but found that all the clues pointed to the covered-up shipwreck ten years ago. As the list of missing persons continues to increase, old records left by his father and evidence concealed by Gu Chen also surface one by one. Before the fog closes the city, they must find out the truth and decide: Will revealing the truth save people, or allow more people to become victims again?
