POK wants TUNG to live with him so that TUNG can be better looked after. TUNG however would like to move back to his home village to enjoy a quiet life, which is what his wife was longing for when she was still alive. POK understands and supports TUNG’s decision. A guy named CHENG HIU-TUNG discovers a dead young woman when he goes for a morning run with his friend. POK and his team come to conduct a forensic investigation but unfortunately the evidence around has all been contaminated by the mud and the rain. YAU needs CHEUNG to follow up this case but CHEUNG asks to go on leave with dozens of excuses. YAU learns from the forensic test results that the semen left in the victim FONG OI-SHAN’s body contains no sperms. They detain a suspect for questioning and DNA extraction. YAU is informed that CHEUNG is almost knocked down by HIU-TUNG’s car and that HIU-TUNG gets beaten up by CHEUNG after the near-miss accident.… ...

YAU asks CHEUNG why he had to dig through HIU-TUNG’s rubbish but CHEUNG does not answer. She tells CHEUNG why she has been putting up with him and reveals that it was he who made her decide to become a police officer. CHEUNG does not respond to what he hears, which disappoints YAU greatly. After serious consideration, CHEUNG goes to see YAU and brings her back to his home, where he reveals to YAU how HIU-TUNG has ruined his life. He believes that HIU-TUNG is the real rapist and murderer. CHEUNG seeks YAU’s permission to continue to follow up the case so that he can catch the villain with his own hands. YAU then turns to POK for help. POK points out that if HIU-TUNG is the real murderer, he must have committed similar offences over all these years. He advises YAU to approach Interpol for further information. CHEUNG has become a different man and has a very good attitude towards his work, which surprises every member of his team.… ...

HIU-TUNG knocks CHEUNG about and beats him up. He admits his guilt and threatens to kill another victim in front of CHEUNG. CHEUNG struggles to untie himself in an attempt to save the innocent girl, but in vain. CHEUNG gets stabbed by HIU-TUNG. In the nick of time, YAU and a team of police officers come along and manage to subdue HIU-TUNG with a gunshot. CHEUNG dies of severe injuries. HIU-TUNG claims that CHEUNG is the real murderer. He manages to explain away his suspicious behavior but POK insists that the evidence will speak for itself. WOON cannot get over the distress caused by divorce and would like to offer her resignation. POK shows concern for WOON and gives her a few words of encouragement. POK and WOON find a strong piece of evidence at HIU-TUNG’s home, which supports the charge against the villain. The police’s success in this case makes WOON change her mind. LUNG’s younger brother LEUNG HING-CHUNG believes in Feng Shui.… ...