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.… ...

With the door bell ringing, CHI-FUNG goes to open the door and sees the police. TIN-YEUNG comes forward and reveals his identity, alleging that CHI-FUNG’s oldest son, WAI-SHUN, is suspected in a murder. Upon TUNG YUET’s return home, TUNG YAT tells her that he met a very smart kid, unfortunately, no one understood him except TUNG YAT himself. TAI-YIN arrives at CHI-FUNG’s home and sees that TUNG YAT is doing mathematics with CHI-FUNG’s youngest son, WAI-CHUNG. After listening to what CHI-FUNG said, he finds out that WAI-SHUN seems to be socially awkward which might stem from family problems. In order to look for WAI-SHUN, CHI-FUNG intends to temporarily arrange for WAI-CHUNG to stay in an orphanage, but WAI-CHUNG refuses. TAI-YIN goes to a restaurant to look for HAU-MAN after learning that it’s her birthday. Seeing that she is dating a married man, he cannot help driving him away.… ...

To investigate KIN-KEUNG’s case, TAI-YIN takes the initiative to contact the victims’ family members, asking them whether anyone among the three victims was dating anyone. TAI-YIN conducts an analysis and rules out the possibility that KIN-KEUNG killed them due to the breakdown of his relationship with them. MEI-YAN asks TAI-YIN whether he agrees to be the witness for the child custody case, instead TAI-YIN asks whether CHI-FUNG is not WAI-CHUNG’s biological father. TAI-YIN returns to the clinic only to find that TUNG YAT and TIN-YEUNG are together so he cannot help feeling strange. HAU-MAN is poured paint on by a married man’s wife, which leaves her no other choice but to go to TAI-YIN’s home to wash her clothes. Seeing that TAI-YIN makes his study room look like SAU-YEE’s office, HAU-MAN becomes very angry. CHI-FUNG bursts into TAI-YIN’s office, accusing him of helping MEI-YAN separate him and WAI-CHUNG.… ...

TUNG YUET goes to meet TAI-YIN, telling him CHI-FUNG has gone missing. The police even take TUNG YAT into custody as they suspect that he is involved in the murder case. According to TAI-YIN, CHI-FUNG and his two sons have all gone missing. CHI-FUNG arrives at the park to meet WAI-CHUNG, asking him why he left the orphanage. He arranges for WAI-SHUN to take a boat to leave Hong Kong, but they later run into the police. With MEI-YAN noticing that WAI-CHUNG carries CHI-FUNG’s confession letter, TAI-YIN urges TIN-YEUNG to look for CHI-FUNG, fearing that CHI-FUNG is going to kill himself. After the police arrest WAI-SHUN, TIN-YEUNG takes the statement from him, and learns that he is not the killer. TAI-YIN locates the address where CHI-FUNG is hiding, so he immediately informs TIN-YEUNG to rush there and save him. TIN-YEUNG meets up with TAI-YIN, hoping that he can help analyze who is the culprit.… ...

TIN-YEUNG arrests TUNG YAT, accusing him of computer fraud. When TUNG YUET and TUNG YAT leave the police station, TUNG YUET laments that no lawyer is willing to defend TUNG YAT. TAI-YIN feels that TIN-YEUNG not only picks on TUNG YAT, but also hates his guts, so he asks TUNG YUET to help probe into the matter, wondering whether TUNG YAT offended TIN-YEUNG in the past. Once again, TAI-YIN goes to visit KIN-KEUNG, following which he hands KIN-KEUNG’s favorite articles to HAU-MAN. The two then start discussing that KIN-KEUNG went with the victims to a place that was covered by snow. HOI-CHING finds TUNG YAT and reveals her intention, which is to invite him on an internet radio show. However, TUNG YAT abruptly turns her down. After HOI-CHING lets TUNG YAT listen to TIN-YEUNG’s audio recordings, TUNG YAT claims that the situation was not like TIN-YEUNG described, adding that he wants TIN-YEUNG to apologize.… ...

Upon TUNG YUET’s return home, she sees TUNG YAT stand at the edge of the rooftop terrace, and right away she dashes there to save him. TUNG YUET questions HANA whether she induced TUNG YAT to take any drugs, to which HANA denies, saying that the drug was stolen. TUNG YUET analyzes the situation and concludes that HANA’s brother MAN attempted to give HANA the drug, but was discovered by their mother PING, who threw away the drug. TAI-YIN arranges for TUNG YAT to have a dinner with TIN-YEUNG, hoping that TUNG YAT can learn how to get along with the others. With TIN-YEUNG noticing a girl suffer severe injuries, the police investigate and find that she is a street dancer. Through their investigation, TIN-YEUNG learns from other youth that TUNG YUET is the social worker who helps HANA. At the police station, TIN-YEUNG bumps into TUNG YUET, he immediately tells her about what happened to NGAR-YEE.… ...

ALICE regains consciousness after the coma, following which TIN-YEUNG takes a statement from her and adds that she is danger. TUNG YUET runs into BONG on the street so she instantly chases after him, asking whether he saw HANA. According to TUNG YUET, those from both sides of the law are looking for her, and ALICE suffers severe injuries after being beaten up. However, BONG insists repeatedly that he never saw HANA. Just as TIN-YEUNG and other police officers are about to arrest BLACK DEVIL, TUNG YUET shows up in such critical situation, putting TIN-YEUNG in a terrible dilemma. TUNG YUET goes to visit PING in the hospital, but PING misconceives that she is dating MAN, trying to test her intention. HOI-CHING’s phone suddenly rings and ZOE notices that it’s TAI-YIN who calls. Unexpectedly, HOI-CHING does not pick up the phone, claiming that she does not want to recall what happened years ago.… ...

As soon as TAI-YIN returns to his clinic after his vacation, TUNG YAT goes to meet him and their new conversation topic is about love. TIN-YEUNG feels very resentful after being assigned to deal with small cases. At that time, KWAI-SHING out of the blue appears and starts selling insurance to TIN-YEUNG’s supervisor, making TIN-YEUNG feel very embarrassed. When TUNG YAT goes to the radio station, HOI-CHING enquires him about TAI-YIN’s injury, but TUNG YAT reveals that TAI-YIN has been discharged from the hospital. On second thought, HOI-CHING agrees to begin her treatment with TAI-YIN. She then frankly discloses what happened to her and the other four. HANA is going to perform in Taiwan, yet she left her passport at home, so she asks MAN to go to her home to fetch it.… ...

Just as TUNG YAT is about to confess his affection to HOI-CHING, KA-LONG arrives to pick up HOI-CHING from work. Seeing them holding hands, TUNG YAT cannot help feeling very uncomfortable. HOI-CHING and KA-LONG bump into TAI-YIN. Though TAI-YIN makes it clear that he will not try to force HOI-CHING to accept the treatment anymore, he claims that he still has some questions that he would like to ask HOI-CHING. Upon TUNG YUET’s return home, TUNG YAT sees her and complains of not feeling well, so TUNG YUET explains to him that he is not having a heart attack, instead he is just experiencing a setback in love. She tells him to go and talk to his friends, so TUNG YAT goes to talk to TIN-YEUNG. MAN buys a bouquet of red roses and wants to give them to TUNG YUET, leaving TUNG YUET no other choice but to clarify it with him.… ...

TIN-YEUNG arrests BONG and HANA, who are charged with murder. HANA claims that she did not know PING is dead, adding that she is innocent. Making a thorough investigation, TIN-YEUNG and other police officers get suspicious of BONG. TIN-YEUNG comes to a bar and sees KWAI-SHING also there. KWAI-SHING learns that the police caught the offender or the case of objects being thrown from height. It turns out that he also knows that person. After meeting HANA and BONG, TAI-YIN thinks that it’s impossible that BONG would ever kill anyone for HANA because he found that BONG couldn’t care less about her. TIN-YEUNG becomes very annoyed because he could not find who committed the crime; whereas TAI-YIN believes that they should start with MAN again. TIN-YEUNG and TAI-YIN bring MAN home in hopes of triggering his memories. After TIN-YEUNG solves two cases within a very short period of time, KO SIR is very satisfied with this.… ...

TUNG YAT has no clue as to what happened to MAN, so TAI-YIN explains to him in detail. TUNG YUET tells them that HANA has decided to run the eatery and make it boom ever since PING’s incident. TUNG YAT starts working for the radio station as an assistant, and everybody is so happy for him. HOI-CHING goes back to the radio station, and her co-workers ask her whether she is going to work for another radio station, making HOI-CHING feel very puzzled. She goes to ask TERRY about this, but YU KIN urges her to keep quiet. TUNG YAT helps TAI-YIN investigate the important information related to KIN-KEUNG’s case; whereas TAI-YIN warns him that they should not let TIN-YEUNG know about this. TAI-YIN goes to meet up with HIU-LEI, who was the hall warden at the time of the incident years ago, asking her about KIN-KEUNG.… ...

After HOI-CHING receives a parcel full of cockroaches, her boss asks her whether she wants to call the police, but she does not want to make such a fuss about it. At night, ZOE claims that all the other radio stations learned about this and wanted to know more detail. Yet, HOI-CHING urges her to stop gossiping. HAU-MAN and KWOK-HO notice that TAI-YIN appears to be unhappy, so they try to cheer him up. When TIN-YEUNG is chasing after a criminal, he sees KWAI-SHING impersonate a police officer. He instantly goes to ask him, and KWAI-SHING replies that he just wanted to find the informant that used to work for him. TIN-YEUNG leads KWAI-SHING to meet TUNG YUET, who agrees to try her best to help KWAI-SHING. Suddenly, there is someone screaming in the bar and it turns out she has been sexually assaulted. Right away, TAI-YIN and KWOK-HO dash out but they could not find the suspect. HOI-CHING is injured by YU KIN.… ...

HAU-MAN is drunk so she tells TAI-YIN to go pick her up. TAI-YIN instead tells KWOK-HO to go pick her up as he does not want to cause any misunderstanding. Unexpectedly, KWOK-HO claims that he waited there for a while and still didn’t see HAU-MAN. The following day, TAI-YIN asks HAU-MAN how she got home last night, to which HAU-MAN replies that it’s Dr. WONG who drove her home. There is a new parcel for HOI-CHING, but all of them including HOI-CHING dare not to open it up, fearing there might be something frightening inside. At that moment, TUNG YAT braves it out to open the parcel, only to find out there are four teeth. TIN-YEUNG suspects that someone is purposely targeting the radio station for its shows, urging HOI-CHING to be careful. When KA-LONG rushes back home, TSZ-WAI suddenly shows up and wants KA-LONG to accompany her.… ...

TUNG YAT notices someone is following him after getting off from work, so he apprehends that person by using a self-defense technique. It turns out that the person is actually his new co-worker KWOK-PENG. KWAI-SHING swears that he will never return home. Seeing that he was recently discharged from the hospital, TUNG YUET has no other choice but to take him in temporarily. With the photo of HOI-CHING and TUNG YAT being published, the other media even depicts TUNG YAT as HOI-CHING’s admirer. Thinking that it will negatively affect their reputation, the owner of the radio station plans to fire TUNG YAT. In her show, HOI-CHING constantly implies that it’s TUNG YAT who kept harassing her. Having heard this, TUNG YAT becomes very unhappy. All of this turns out to be the trap set up by TAI-YIN. The obsessed fan has not made any move for many years, which makes TAI-YIN suspect that he is one of the employees of the radio station.… ...

During the investigation, TIN-YEUNG uncovers many of HOI-CHING’s photos in KA-LEUNG’s home, and he even finds out where HOI-CHING is taken. TUNG YAT arrives at the abandoned house only to find out that the floor is covered with blood; whereas HOI-CHING is nowhere to be seen. TUNG YAT continues to look for HOI-CHING and eventually finds her, however, HOI-CHING is so frightened that she keeps struggling. TAI-YIN is asked to provide psychological therapies for the employees of the radio station, because most of them feel frightened as soon as they see people in uniforms. Upon TAI-YIN’s departure, HOI-CHING happens to come to work. Surprisingly, HOI-CHING does not show the slightest intimidation after seeing those in uniforms, to which TAI-YIN cannot help feeling very strange. Ever since the obsessed fans saga, many media want to interview HOI-CHING, and many film production companies want to find her to film a movie.… ...

After gaining the support of her boss and the audience, HOI-CHING gets to host a new show, enjoying a surge in popularity. She goes online and sees that many people posted insulting message to her Facebook page; whereas KA-LONG tells her that he has already applied to the hospital for a vacation so that they can go travelling together. However, HOI-CHING tells him that it’s not helpful. In order to investigate HOI-CHING, TAI-YIN also goes to HOI-CHING’s Facebook page to gather more evidence. KWAI-SHING learns that BIG HEAD was sent to the hospital, so he immediately goes to visit him, during which TUNG YUET tells him that BIG HEAD is dying. KWAI-SHING hopes that TIN-YEUNG can come to the hospital to visit BIG HEAD, but TIN-YEUNG refuses. Instead, he’d rather have hot pot with TUNG YAT.… ...

TIN-YEUNG does not know that TUNG YUET is the victim and witness of the case until he arrives at the hospital, which leaves him no other choice but to take the statement from her; whereas TUNG YAT flies into a rage as soon as he sees him. TIN-YEUNG receives KO SIR’s phone call, informing him that the place that was broken into is the residence of a high-ranking police official. TAI-YIN goes to the bar and sees KA-LONG appear to be very unhappy, so he suggests that he should seek aid from HOI-CHING’s family members. To his surprise, KA-LONG reveals that they lost contact with HOI-CHING’s elder brother. After days of observation, TIN-YEUNG and other police officers eventually find a clue which links to a suspicious Southern Asian person. HIU-LEI out of the blue calls TAI-YIN, telling him that she found a memory card, in which there should be some photos that were taken in Tai Mo Shan.… ...

TUNG YAT dreams about the happy time when he and his mother were having fun on a beach during his childhood. The following morning, he wakes up TUNG YUET and drags her along to play with him at the beach. CHI-MING is tied up and dumped in the field, fortunately, someone finds him. The police discover a pair of high heel shoes with different sizes. TIN-YEUNG keeps asking CHI-MING about this, leaving him no other choice but to frankly reveal to him that he has a girlfriend. However, CHI-MING urges TIN-YEUNG not to disclose this to his wife WING-SEUNG. HOI-CHI is abducted, so the police go to CHI-MING’s home to set up a command post there and monitor all the incoming calls. CHI-MING receives a text message from the kidnappers, asking for a ransom. Having learned about this, WING-SEUNG tells them that she can offer some money to help them. All of them think that the criminals who did the break and enter orchestrated the kidnapping.… ...

After meeting each other, TUNG YAT tells WING-SEUNG things that have happened to him these past years, adding that he is not sure whether TUNG YUET is willing to meet her; whereas WING-SEUNG discloses that she got married and has a new life. CHI-MING secretly goes to HOI-CHI’s home, and HOI-CHI tells him to buy a property for her, above which she even wants CHI-MING to divorce his wife immediately. Seeing that YUNG YAT keeps using the mobile phone with a smile on his face, TUNG YUET misconceives that he is seeing someone. Therefore, TUNG YAT suggests taking TUNG YUET to meet that person. As soon as TUNG YUET sees WING-SEUNG, she instantly wants to leave but is stopped by YUNG YAT. WING-SEUNG tells CHI-MING about TUNG YAT and TUNG YUET. Having heard this, CHI-MING suspects that the reason that they come to meet them is because they know they are rich. TAI-YIN arranges for CAT, who is in a coma, to receive treatment in the USA.… ...

TAI-YIN suddenly receives news and is shocked, learning that they may never know what really happened. TAI-YIN keeps drinking at the bar, and HAU-MAN tries her best to stop him from doing so. TUNG YUET arrives at TIN-YEUNG’s home to have dinner, and she is envious of KWAI-SHING’s cooking skills. TIN-YEUNG tells TUNG YUET that WING-SEUNG’s life is not like what TUNG YUET thinks as she has her own difficulties. When TIN-YEUNG investigates HOI-CHI’s kidnapping case, he suspects that the whole kidnapping was orchestrated by WING-SEUNG. Someone informs CHI-MING that WING-SEUNG is going to sell the apartment unit. CHI-MING asks WING-SEUNG about it, to which WING-SEUNG claims that she is going to transfer the ownership of the property to TUNG YAT and TUNG YUET. Having heard this, CHI-MING becomes very angry.… ...

HOI-CHING is hit by a car when she gets off work and suffers a miscarriage. She apologizes to KA-LONG, but KA-LONG does not blame her for this, above which he even thinks that it’s Kama. After KA-LONG leaves the hospital, ZOE and HOI-CHING reveal what’s really on their minds. CHI-MING arrives at TUNG YAT’s home, claiming that he broke up with HOI-CHI in hopes of gaining WING-SEUNG’s forgiveness. TUNG YAT learns that TUNG YUET invited WING-SEUNG and CHI-MING to have dinner together. CHI-MING intends to give TUNG YAT and TUNG YUET a real property as a gift, but is turned down by TUNG YUET. WING-SEUNG notices CHI-MING looks very miserable, so CHI-MING tells her that he is suspected to be involved in embezzlement. Though he has come up with a solution, he needs help from TUNG YAT. CAT’s autopsy report is completed. After TAI-YIN reads the report, he thinks that the cause of death of CAT is not that simple.… ...

Following the deaths of CHI-MING and HOI-CHI, the police suspect that the two were murdered by WING-SEUNG; whereas WING-SEUNG denies poisoning them. TIN-YEUNG claims she has a motive because she knew that CHI-MING was still seeing HOI-CHI. TIN-YEUNG arranges for TUNG YUET to meet up with WING-SEUNG. Right away, TUNG YUET asks whether WING-SEUNG was under pressure to kill them, to which WING-SEUNG denies. TUNG YUET wants TIN-YEUNG to return a favor, which is to catch the culprit as soon as possible. After hearing that the police examined the case, TAI-YIN is of the opinion that the murderer must be someone else. He views the video recorded by the secret lover PING-KWONG, and concludes that he is not the murderer because he loves HOI-CHI too much to kill her. Seeing that TUNG YAT tries every possible way to help WING-SEUNG clear her name, TIN-YEUNG and TAI-YIN cannot help feeling impressed with his persistence.… ...

TUNG YUET shows up at the police station, making TIN-YEUNG very happy. However, she turns out to have an appointment with another police officer called LIK, and TIN-YEUNG is consumed by jealousy. While hunting down a suspect, TIN-YEUNG’s old foot injury starts to bother him again, and as such he falls and cannot walk anymore. TUNG YAT invites TIN-YEUNG out to have hot pot together. TUNG YUET also wants to join them, but is rejected by TUNG YAT. While there, TIN-YEUNG asks TUNG YAT about TUNG YUET’s hobbies, to which TUNG YUET tells him. After TAI-YIN hands TUNG YAT’s psychological assessment report to the court, TUNG YAT is no longer required to meet TAI-YIN, yet TAI-YIN still needs TUNG YAT’s help. On the street, TAI-YIN runs into KA-LONG who almost dies after overdosing, so TAI-YIN instantly leaps forward to perform first aid for him.… ...

HOI-CHING and TAI-YIN are waiting for KA-LONG, but he does not show up. HOI-CHING returns home only to find out that KA-LONG has passed away on the couch. TAI-YIN does not believe that KA-LONG committed suicide. On the other hand, TAI-YIN notices that KWOK-HO becomes very emotional, fearing that he suffers from a recurrent depression. For the first time, TAI-YIN meets CHUNG-HIN and reveals that he wants to appeal KIN-KEUNG’s conviction, but CHUNG-HIN thinks it’s not easy. TAI-YIN wants to have lunch with CHUNG-HIN, who instead tells him that he has a date with his girlfriend. His girlfriend turns out to be HAU-MAN. HOI-CHING decides to resign because she does not feel well; whereas TUNG YUET goes to the police station to have a word with TIN-YEUNG, who instead gives her the cold shoulder. HOI-CHING forms a new company, starting her own business. She wants to recruit TUNG YAT to help her, to which ZOE strongly opposes.… ...

HOI-CHING and TAI-YIN are waiting for KA-LONG, but he does not show up. HOI-CHING returns home only to find out that KA-LONG has passed away on the couch. TAI-YIN does not believe that KA-LONG committed suicide. On the other hand, TAI-YIN notices that KWOK-HO becomes very emotional, fearing that he suffers from a recurrent depression. For the first time, TAI-YIN meets CHUNG-HIN and reveals that he wants to appeal KIN-KEUNG’s conviction, but CHUNG-HIN thinks it’s not easy. TAI-YIN wants to have lunch with CHUNG-HIN, who instead tells him that he has a date with his girlfriend. His girlfriend turns out to be HAU-MAN. HOI-CHING decides to resign because she does not feel well; whereas TUNG YUET goes to the police station to have a word with TIN-YEUNG, who instead gives her the cold shoulder. HOI-CHING forms a new company, starting her own business. She wants to recruit TUNG YAT to help her, to which ZOE strongly opposes.… ...

With TIN-YEUNG asking CHUNG-HIN to treat his foot ache, CHUNG-HIN suspects that he suffers from psychosomatic disorder which leads to a negative impact on his physical health, adding that the pain most likely stems from his fear. CHUNG-HIN goes to visit HOI-CHING’s new company, during which he warns HOI-CHING to be wary of TAI-YIN. To his surprise, HOI-CHING claims that TAI-YIN does not have any friends to help him, so it’s not necessary to fear him. After hearing CHUNG-HIN’s advice which is to discover the root of his fear, TIN-YEUNG decides to stand his ground at work no matter what. CHUNG-HIN asks KWOK-HO about TAI-YIN’s past. KWOK-HO plans to go to CHUNG-HIN’s clinic, without knowing that he runs into CHUNG-HIN at the restaurant. He then comes up with an idea, which to switch CHUNG-HIN’s mobile phone to install an online surveillance app.… ...

HAU-MAN tells CHUNG-HIN that KWOK-HO was murdered, and according to the police, it was a robbery gone wrong, yet TAI-YIN believes that CHUNG-HIN and HOI-CHING killed him. Knowing that he can no longer conceal the truth from HAU-MAN, CHUNG-HIN reveals the whole thing to her, adding that he did that just to save his own life. With TAI-YIN and the others going to a bar to pay tribute to the late KWOK-HO, TIN-YEUNG claims that he has already found a clue, which is linked to the surveillance camera system of the bar. Having heard this, TUNG YAT indicates that it’s very easy to sabotage the system. TUNG YUET contacts the social worker who followed ZOE’s case in the past, and she reveals everything about ZOE to TUNG YUET and TIN-YEUNG. HAU-MAN meets TAI-YIN and hands him the invitation card; whereas TAI-YIN passes CHUNG-HIN’s portfolio to HAU-MAN. Nonetheless, HAU-MAN still decides to marry him.… ...

TIN-YEUNG goes to meet HOI-CHING at her office, asking whether she saw ZOE. HOI-CHING replies that she has not seen ZOE ever since she disappeared. After the police tell her that ZOE committed suicide by jumping off a high building, she suddenly bursts into tears. TIN-YEUNG says that TUNG YUET was so scared that she passed out after seeing what happened. Though TUNG YUET regains her consciousness, she completely forgets what happened. TAI-YIN hypnotizes TUNG YUET in hopes of helping her recall memories regarding the case. With TAI-YIN’s guidance, TUNG YUET eventually remembers what happened when ZOE died. TUNG YAT comforts HOI-CHING and tells her that ZOE’s death was not suicide. He even discloses that after being hypnotized, TUNG YUET recalled there was another person on the rooftop terrace that day. TUNG YUET is attacked while waiting for TUNG YAT on the street.… ...