Police captain Lu Chen took over the disappearance case of Professor Lin Zhengming, smelled a dangerous atmosphere from an encrypted notebook, and gradually uncovered the poisonous conspiracy of the "Black Crow" organization. During the investigation, Lin Zhengming's daughter Lin Xiao joined in with more clues. The two went from the underground air-raid shelter of the bell tower to the abandoned military factory in Xishan, uncovering clues in the fog. Jiang Zhe, a seemingly reliable ally, has hidden murderous intentions, and Wang Kun, a bank executive, manipulates the capital chain behind the scenes. Lu Chen must not only lead the investigation and dispatch police forces to break through the stronghold, but also distinguish lies and truth. In the end, he relies on rigorous reasoning and thunderous operations to destroy the core of the organization, protect the peace of the city, find Lin Xiao's father, and uncover all the mysteries.
