My Dearly Sinful Mind

When registered clinical psychologist CHUNG TAI-YIN is driving on the highway, he recalls the past and cannot help tearing up. For research, TAI-YIN interviewed a murderer LO KIN-KEUNG a year ago. KIN-KEUNG is extremely sensitive. TAI-YIN adopts every possible way to try to trigger his memory of the murder, but to no avail. Upon TAI-YIN's return home, his girlfriend, TSANG SAU-YEE who is also a psychologist, asks him about his opinion after the interview. TAI-YIN does not believe that KIN-KEUNG would ever hurt anyone, so he is determined to solve the mystery. There is a virus in the computers of the company that TUNG YAT works for, so his boss immediately tells him to fix the problem. However, TUNG YAT's response makes his boss so angry that he yells at him. TUNG YAT's sister, TUNG YUET, is a social worker. She accompanies TUNG YAT to the police station, during which she keeps reprimanding him, hoping him to understand the seriousness of the consequence. With TUNG YAT appearing at court, the judge, who is aware of his problem, makes a compulsory psychiatric treatment order. TUNG YUET seeks help from TAI-YIN, but TUNG YAT walks to TAI-YIN's office and frankly tells him that he did not want to come. TAI-YIN suggests that he does not have to come as long as he promises to do one thing for him. Having heard this, TUNG YAT becomes very happy and agrees. TAI-YIN finds TUNG YAT's case is very interesting, and wants to help him because he notices that TUNG YAT has a very high IQ. CHAN MEI-YAN comes to meet TAI-YIN and reveals her ex-husband LEUNG CHI-FUNG's situation to TAI-YIN, who immediately goes to probe into the matter.