While investigating the case , Guo meets Wang Yufen , who narrowly escaped from the killer .
One of the victims was Guo Zeqing 's girlfriend ; Guo has been feeling depressed since her death and is determined to avenge her .
While investigating the case , Guo meets Wang Yufen , who narrowly escaped from the killer .
One of the victims was Guo Zeqing 's girlfriend ; Guo has been feeling depressed since her death and is determined to avenge her .