After the undercover policewoman was "sacrificed" by the organization, she was reborn under the criminal code name 309. Three years later, she faced off in black and white with her ex-boyfriend (now the criminal investigation captain) who abandoned her. Present continuous tense, the chapter begins with the first day of the heroine's "return" to Nancheng,
The police have a "shadow system" that does not exist - 309 is the undercover number in which the file has been erased. The mission failed three years ago, and the organization abandoned her for self-preservation. She faked her death and escaped, and now she is back as a gangster.
