Story Structure — 4 Plot Phases

Yu Zui is recruited as an undercover agent, begins approaching the criminal gang, and establishes a basic level of trust

Recruitment — Yu Zui is recruited by Xu Pingqiu as an undercover agent Characters: 余罪, 许平秋 Location: Police Station
First Assignment — Yu Zui begins to approach the criminal gang Characters: 余罪, 傅国生, 沈嘉文 Location: Underworld Location
Building Trust — Yu Zui gradually gains the criminal gang's trust Characters: 余罪, 傅国生, Shu Biao Location: Crime Hideout
Police Station — Police headquarters Characters: 余罪, 许平秋 Location: Police Station
Team Assembly — The police team is formed Characters: 余罪, 林宇婧, 张猛, 解冰 Location: Police Station
Undercover Identity — Yu Zui keeps in touch with friends from his hometown Characters: 余罪, 细妹子 Location: Hometown

Yu Zui infiltrates the criminal gang and takes part in its criminal activities while facing the risk of his identity being exposed

First Crime — Yu Zui takes part in his first criminal activity Characters: 余罪, 傅国生, 沈嘉文 Location: Crime Scene
Suspicion Arises — Fu Guosheng begins to suspect Yu Zui's identity Characters: 余罪, 傅国生, Shu Biao Location: Crime Hideout
Police Investigation — The police investigate the criminal gang's activities Characters: 林宇婧, 许平秋, 解冰 Location: Police Station
Crime Hideout — The criminal gang's hideout Characters: 余罪, 傅国生, 沈嘉文 Location: Crime Hideout
Betrayal — The threat of Yu Zui's identity being exposed Characters: 余罪, 傅国生, Shu Biao Location: Crime Hideout
Mentor Guidance — Xu Pingqiu teaches Yu Zui undercover techniques Characters: 余罪, 许平秋 Location: Training Facility
Crime Planning — The criminal gang plans its activities Characters: 余罪, 傅国生, 沈嘉文 Location: Crime Hideout

With his identity at risk of exposure, Yu Zui directly confronts the criminal gang while also dealing with personal romantic entanglements

Love Interest — Yu Zui and An Jialu develop romantic feelings Characters: 余罪, 安嘉璐 Location: Social Setting
Critical Mission — Yu Zui obtains crucial evidence of the gang's crimes Characters: 余罪, 傅国生, 沈嘉文, Shu Biao Location: Operation Location
Evidence — Crucial evidence of the gang's crimes Characters: 余罪, 傅国生 Location: Operation Location
Personal Conflict — Yu Zui's rivalry with Xie Bing Characters: 余罪, 解冰, 安嘉璐 Location: Social Setting

Yu Zui obtains crucial evidence and works with the police in a final operation, successfully taking down the criminal gang

Confrontation — Yu Zui and Fu Guosheng face off for the final time Characters: 余罪, 傅国生, 林宇婧, 张猛 Location: Final Location
Arrest — The criminal gang is arrested by the police Characters: 余罪, 傅国生, 许平秋, 林宇婧 Location: Police Station
Final Showdown — The police and the criminal gang face off for the final time Characters: 余罪, 傅国生, 林宇婧, 许平秋 Location: Final Location

Story Breakdown

Recruitment & Training — Yu Zui is recruited by Xu Pingqiu and receives undercover training
- Police Station Meeting — Yu Zui meets Xu Pingqiu for the first time
- Undercover Preparation — Yu Zui receives training for his undercover assignment
Infiltration — Yu Zui approaches and infiltrates the criminal gang
- First Contact — Yu Zui has his first contact with Fu Guosheng
- Building Trust — Yu Zui gradually gains the criminal gang's trust
- First Crime — Yu Zui takes part in his first criminal activity
Identity Crisis — Yu Zui faces the risk of his identity being exposed
- Suspicion Arises — Fu Guosheng begins to suspect Yu Zui's identity
- Betrayal Risk — The threat of Yu Zui's identity being exposed
Personal Relationships — Yu Zui's personal relationships develop during the assignment
- Love Interest — Yu Zui and An Jialu's relationship develops
- Rivalry — Yu Zui's rivalry with Xie Bing
- Friendship — Yu Zui's friendship with Ximei Zi
Climax & Resolution — Yu Zui's final confrontation with the criminal gang
- Critical Mission — Yu Zui obtains crucial evidence of the gang's crimes
- Final Confrontation — Yu Zui and Fu Guosheng face off for the final time
- Arrest — The criminal gang is arrested by the police