Former Macau police officer Liang Jinghui (played by Lam Ka-tung) is a paranoid weirdo in the eyes of others. He is serious every day. He often buys various spices and hides in his hut to find something. He often sits alone in a fixed teahouse and mutters to himself. Simon (played by Li Dongheng) and Guo Wanjun (played by Cai Jie), senior executives of an online financial company, attracted Liang Jinghui's attention. He quit his job and joined the financial company. Like dominoes, a series of events happened one after another, and Liang Jinghui felt that he had found a clue. But a hacker (played by Dai Xianyang) who was tracked by female police officer Zhou Peishi (played by Niu Liyan) appeared and disappeared like a ghost, making the mystery confusing again. The appearance of Zhang Ziqi (played by Liao Yinman) brought Liang Jinghui to the crossroads of redemption. He seemed unable to get out of the trap set by the mysterious man (played by Qian Bo) and repeat the defeat of the incense three years ago.