When Jin Fei met Lin Jiang by chance, his father's imprisonment became an excuse for him to humiliate him, and he even forced her to accompany him to dinner.Jin Fei firmly refused, which angered Lin Jiang. Fortunately, Jiang Xiaohai intervened in time and dispersed Lin Jiang.However, Jin Fei witnessed the misfortune of Qin Yi and his father, thought Jiang Xiaohai could stay out of the matter, and angrily accused him of hypocritical concern.

Members of the task force stayed up all night working on the drug case, but only found retail clues and could not get to the source.Gu Yiran proposed changing the strategy, starting with the chemical raw materials of methamphetamine, and focusing on pharmaceutical and chemical plants. Even if he could not investigate one by one, he could still find clues in the accounts.Zheng Bei agreed with this proposal and quickly deployed action.

That night, Zheng Bei, Gu Yiran and Zhao Xiaoguang watched movies to find inspiration for solving the case.Zheng Nan took the opportunity to get close to Zhao Xiaoguang, but was embarrassed and depressed.Friends comforted Zheng Nan, just hinting, there is no need to confess directly.

Later, Zheng Nan went to a video rental store with Zhao Xiaoguang on the pretext of choosing a movie, and cleverly expressed his feelings, but was misunderstood by Zhao Xiaoguang as a hint of broad and unspecific love, causing Zheng Nan's indirect confession to fail again.

Zheng Bei visited Jiang Xiaohai with home-cooked food and an electric fan to express his brotherly care, but Jiang Xiaohai felt that this was not necessary.On the other side, Gu Yiran discovered Yunhui Pharmaceutical Factory in its accounts and thought of the relationship between Jiang Xiaohai's brother-in-law.

At the same time, Jiang Yingzi delivered food to Wang Jianmin, but was deliberately provoked by Finance Han Li, and the atmosphere was delicate.Soon after, Han Li's body was discovered, and the case team took over the investigation.Zheng Bei recognized Han Li's identity and applied for merging of the case for investigation in view of her relationship with Wang Jianmin.

The task force conducted an in-depth investigation. Zheng Bei found scratches suspected to be left by a sapper's shovel at the crime scene, and speculated that the murder weapon was old.Later, Zheng Bei and Gu Yiran questioned Wang Jianmin and noticed that the burns on his arms were consistent with the gap in Han Li's teeth. Wang Jianmin denied emotional entanglement and only admitted that he knew Han Li's thoughts but did not respond.

On the other side, Zhang Xueyao and others found blood stains and confirmed that they were left by Han Li, which heightened the suspicion against Wang Jianmin.Gu Yiran combined Han Li's behavior of copying the ledger and speculated that the ledger may be the key to the murder, and Wang Jianmin may have committed the murder by destroying evidence.