A wealthy young man spends a night with a female internet celebrity and murders her. Initially, it seems like an open-and-shut case with clear evidence. To compete with his archenemy Chen Jiaqiang for case sources, Song Yinting takes a risky move and proposes a solution: 'creating a series of serial murders' to secure the wealthy young man's acquittal.

Professional killer Di Ge takes a murder contract and kills two internet celebrities. However, police officer Xiangyi becomes suspicious when Di Ge takes items from the victims' bodies. Xiangyi insists on not handling the cases separately and teams up with journalist Jiang Ying to uncover the truth. To consolidate the cases, Song Yinting manipulates public opinion and forces Xiangyi to leave the case team. However, Xiangyi continues to pursue the truth.

Xiangyi's relentless pursuit forces Song Yinting to take extreme measures to silence the killer.

As justice prevails, while the wealthy young man is released, Xiangyi tracks down Di Ge's body and arrests Song Yinting. Chen Jiaqiang convinces He Meiqing to confess and clarify Song Yinting's criminal process. Song Yinting has no choice but to confess.

However, Song Yinting's confession is to protect his son. He had discovered his son's unusual activities on the night the female internet celebrity died. To protect his son, he took drastic actions and blurred the lines. The truth is investigated, and Song Yaohui is also arrested.

Arrested Song Yaohui, however, revealed another truth...