[3] Highly intelligent police officer Bai Jingxi works with her partner Han Chen to solve many difficult cases using her outstanding deductive reasoning.
The two meet again while solving a rape case, and Bai Jingxi discovers that Han Chen is actually an experienced criminal police, and his use of traditional investigation methods impresses her.
Han Chen and Su Mian slowly recover their memories; and just when they were about to team up and confront the criminal organization, they found out that the psychotic killers were already right beside them.
Under Han Chen and Su Mian's persistent chase, the criminal organization sends out a declaration letter.
Han Chen and Su Mian set out to stop the murderers, and in the process discover their actual identities.