In the prosperous coastal city, sin is hidden in the feasting and feasting. When a mutilated corpse is discovered on the beach, young detective Su Ran joins hands with forensic doctor Lin Yao to intervene in the investigation. They uncover the complicated past of gangster Li Qiang and lead to the criminal group of business tycoon Zhou Hong. During the investigation, Su Ran was threatened and Lin Yao was kidnapped, but the mysterious man X secretly helped. As the investigation deepened, it was discovered that behind the scenes was a shocking conspiracy by an international criminal organization to establish a drug base in Binhai City. When the mysterious person X whose identity remains a mystery is revealed, he turns out to be Li Ming, a policeman who has been missing for many years. In the fierce confrontation with evil, can they successfully protect the tranquility of the city and let justice penetrate the fog?
