After losing part of her memory, KO CHIT left CHEUNG TAI YUNG and started her new life alone in Canada. YUNG goes to find CHIT but in vain as she has started off to Beijing to organize an interview. CHIT stays in Hong Kong and visits the psychologist who gave her treatment in the past. As he has retired, CHIT seeks treatment from HO CHI WANG. YUNG secretly follows CHIT to Beijing. On the plane, a man named LAW TO FUNG claims that he is CHIT's friend. CHIT thinks that he is her former friend but she cannot recall him as she has lost part of her memory. LI CHUNG YI arrives and informs YUNG that SHEK SIU WAI is blackmailed. YUNG goes to the police station with them. CHIT has made an appointment to interview Professor CHEUNG. The appointment has to be postponed as Professor CHEUNG does not have time. The gangster blackmailing WAI does not turn up. However YUNG and KIU CHUN are aware that a lady is connected to the case.… ...

YUNG brings CHIT to the police to report the theft. However CHIT is frightened. In the third transaction, NAM CHING is arrested. She states that she works with WONG HO SANG in WAI's case. However they cannot find DSANG as SANG is dead. CHUN finds the letter left by LING SIN WA and suspects that she is involved in SANG's death. YUNG meets FUK CHIU HUNG, who is CHUN's mother. As CHUN indulges in his work and neglects his wife KEUNG YEUNG, HUNG is discontented. CHIT suggests to break up with YUNG immediately when they arrive at Hong Kong. Her sister KO MAN suggests her to think over it carefully but is in vain. YUNG does not understand what has happened. He chases after CHIT and by mistake he hurts her leg. In the hospital MAN states that the X-ray film is not CHIT's as CHIT was hurt and screws should be found in her leg bones. Later MAN is knocked down by a car and is on the brink of death. It is a set up instead of an accident.… ...

YUNG questions CHIT but he is lurked. He faints and luckily he is saved by YI. When he regains his consciousness, he rushes back to Beijing where he finds the real CHIT is hospital. CHIT can only recalls that she hurt SANG when he wanted to rape her. She can remember nothing fatter then. The police accuse CHIT having killed SANG and do not allow YUNG to visit her. As YUNG can do nothing to help her, he is angry. Later YUNG seeks help from YU who is a green-handed lawyer.

YUNG asks YU to send a letter to CHIT. CHUN is impressed by YUNG's love of CHIT and he goes home to stay with his wife. CHIT faints and is sent to hospital. CHUN allows YUNG to visit her. They are happy to see each other. YUNG asks CHIT details of the case and finds many suspicious points. In Hong Kong the fake CHIT, who in fact is LING SIN WA, wants to run away with WANG. However they are chased after by YI. They run away separately and WA is arrested by the Chinese police, YI is sent to Beijing to investigate WA's case. WA claims that she did not kill anyone. She only impersonated CHIT so as to go to Hong Kong. YUNG worries as CHIT's situation is dangerous. YUNG, YI and CHUN go to the site again. They find WA's hand print on a child's clothes. WA is surprised.

As there is evidence, WA admits that the murder was done by her. CHIT and YUNG are excited. On the other hand, WANG returns and declares that all were killed by him. WA knows nothing about the case. YEUNG is pregnant and HUNG is happy. Both WA and WANG are condemned capital punishment while CHIT is released as she hurt SANG to protect herself. YUNG and CHIT return to Hong Kong after the trial.

CHIT wants to move to Canada with MAN but at the last moment she decides to stay with YUNG. YUNG is excited. YUNG and CHIT move to a flat near to YI's house. YI is discontented with LI SI LUNG who records his illegal parking every day. YUNG joins YI's team together to CHAK WING TIN who has a strange character. CHU SAU KWAN is CHIT's aunt. She lives in CHIT's house. YI’s aunt also visits YI. YI accompanies his aunt to Guangzhou to receive treatment. On the return journey, LUI CHIN MEI sees a man being pushes down hill. The victim is her father LUI SAI HO.

MEI is grievous and the case is complicated. YI looks after MEI and MEI thanks him. They mutually impress each other. KWAN does not like CHIT learning cooking from YU PIK LING. LUNG is transferred to YUNG's team and YUNG instructs her to be YI's partner. LUNG knows that she is in trouble. TIN follows the clue that one million dollars has been taken away from HO's account. YI pays MEI a visit and he finds a telephone number in HO's room. After checking he knows that KWOK SHU SUN had borrowed HO's money and they had had a quarrel in a bar before HO was killed. MEI invites YI to stay with her in Lamma Island. They are drunken and fall asleep together. The next morning, SUN's corpse in found on the beach.

A witness states that SUN jumped into the sea and killed himself. YI suspects that he killed himself as he felt guilty. However TIN does not accept YI's conclusion. YUNG and his colleagues check SUN's house and from SUN's MTR tickets and appointments, he could not be with HO when HO was killed. YUNG appreciates TIN's talent. As YI and TIN have different ideas on the case, they argue. At the same time, YI is attracted by MEI's charm. YUNG finds the relationship between HO, SUN and MEI's mother. MEI's mother was pregnant when she married HO. On the other hand an old worker reports that after MEI's mother death, HO raped MEI when he thought MEI was her mother. YI is confused and keeps an eye on MEI's behavior and character. YI's aunt is hypnotized and recalls that she did not witness HO's pushed down hill. She thought she saw the case as instructed by MEI. It is clear that MEI is involved in the case.

YI recalls that he found some salty smell on MEI's hair when they were on Larnma Island. POON CHI TO, a psychiatrist, warns that MEI is a dangerous person on the brink of explosion. YI flatters MEI but at the same time allows her to see him dating LUNG. MEI is confused and insane. MEI invites YI to visit HO's tomb together. YUNG and the others get ready to take action. YUNG asks LUNG to go home as her mother has fainted. Later YI finds that LUNG's mother did not have any problem. He realizes LUNG's dangerous situation and rushes to save her. MEI wants to push LUNG down the cliff with her car. YI arrives just in time to save LUNG and arrest MEI. MEI admits what she has done and kills herself in the police station.

CHIT visits TO. TO is impressed by her and asks her to take a part-?time job. CHIT becomes a part-time journalist and she interviews the winners of a cooking competition. KWAN is unhappy as LING is also a participant. KWAN makes friend with HUNG and is attracted by him. In the press conference KWAN Is nagged by LING. Thus she drives a car towards LING to frighten LING. LING is nearly knocked down and all are taken to the police station. TIN frightens LING to give up accusing KWAN but KWAN does not know TIN's kind act. In fact TIN was KWAN's fiance. When KWAN realizes that HUNG is their new supervisor, she is happy. As KWAN's hand is hurt, she cannot take part in the competition. LING wins the competition.

TIN goes to the inn which they always visited in the past on the outlying island. There he finds KWAN. However it is too late and there is no ferry service. Thus they spend a night on the beach and wait for the dawn. The next morning, TIN brings KWAN to the police station. TIN and LUNG go to Mei King Bay to find witness for KWAN. There they find an artist who drew a portrait of KWAN when she had fallen asleep. His statement proves that KWAN is innocent. CHIT and KWAN visit MUI. They find a rose paper weight. CHIT also gets information that PONG, who was a merchant, was found dead in Singapore after eating LING's food. YUNG suspects LING. YUNG discovers the secret love between PONG and MUI. CHIT recalls the paper weight and also the time difference of their last phone call.

CHIT checks MUI's telephone in her company and discovers her trick on her phone. CBIT is aware that MUI is involved in the case. She also remembers the wooden box of MUI. CHIT and KWAN go to Mei King Bay again. YUNG and his colleagues also arrive at MUI's house. MUI is arrested and accused of being LING's murderer. LUNG's mother is dying. She tells LUNG that her father is not her genetic father. LUNG is reminded to find her real father. YI provides with LUNG accommodation. YUNG's stepbrother comes from the USA. CHIT and KWAN do not like his style.

CHIU's corpse is found along a river. On seeing the decaying corpse, LUNG feels sick. KWAN misinterprets HUNG's intention, thinking that he invites her to see an opera together. In fact she is only a baby-sitter. LUNG tells CHIT her life-saver when she was a child. In fact her life-saver is YI but both do not know. YUNG and CHIT come across TUNG when they are dating. TUNG wants to kill herself but is saved by them. CHIT introduces FAY to be a part-time photographer. FAY is excited. TUNG is YUNG's old friend. She tells CHIT her unpleasant experience. She married a musician LIM. LIM was unemployed, thus she worked hard to earn their livings. She was shocked and wanted to commit suicide as she found the filthy relationship between LIM and her sister LAM. Later LAM is found dead.

LAM is dead and her corpse is terrible. Her neighbor SA reports that before LAM died, there was loud music. YI is careless and breaks SA's Mickey mouse glass. YUNG and YI check the four involved persons. They know that one of them was sent to hospital in Macau. They suspect CHIU as the killer. An old lady comes and recognizes that the corpse is CHIU. YUNG feels strange as TUNG cannot identify the corpse correctly. In the television program, TUNG advises LIM to return. In fact she uses the name of the song to warn LIM not to show up. YUNG cannot realize her trick immediately. TUNG refuses to eat KWAN's cake as she is allergic to eggs. LUNG also gets the medical report from the hospital. YUNG accuses TUNG of telling lies.

YUNG discloses TUNG's trick of misidentifying the corpse. TUNG tells the truth. In fact TUNG and CHIU went to Macau first. Then they asked LIM and LAM to discuss the matter. However they could not compromise. YI takes care of LUNG and tells her that he saved a girl when he was young. LUNG realizes that YI is her life-saver but she does not have the courage to tell him. YUNG follows TUNG and finally finds LIM. YUNG arrests LIM. LIM tells YUNG the whole story. CHID loved LAM and even stole his company's money for her. However LAM loved LIM. Therefore CHID planned to kill LIM after killing LAM. However CHIU was killed by LIM by mistake. After telling YUNG everything, LIM rushes into towards a car and is knocked down. He dies in the street.

FAY and HAY are old friends. HAY's husband owns a magazine. CHIT is aware of the friendship between FAY and HAY. One day FAY and HAY go out with HAY's son BOR. BOR is knocked down by a car and dies. HAY blames herself and feels guilty. SA asks YI to investigate her mother's death. Her mother YING died eighteen years ago. As SA finds a letter left by YING, she believes that YING did not kill herself. TIN was responsible for YING's case, so YI asks him. Later YI and LUNG go to TIN's home and from his neighbor, YI learns that TAI B visited TIN frequently and on the day of YING's death, he was also there. KWAN stays in Hong Kong and runs a restaurant. She is cheated by the workers of renovation. TIN helps her but is hurt. In the hospital, the doctor recognizes TIN and tells TIN that he has recently seen TAI B - MONG.

YI, SA and LUNG visit MONG but MONG cannot recall anything. CHIT introduces TUNG to help KWAN in her shop. TIN's friend KIN comes to avenge TIN's being hurt. KWAN calls the police. In order to settle the case, TIN gives money to KWAN and the workers as compensation. HUNG's daughter YEE is murdered. YUNG and YI investigate the case. Beside YEE's corpse, TIN finds some hair and a hat. He recalls that the situation is similar to YING's case. He tells YUNG. YUNG continues his investigation. SA and MONG are hypnotized. MONG recalls that SA was asked to lock the door. They conclude that YING knew the murderer. SA's uncle LEUNG had filthy relationship with YING. YI finds LEUNG before YING's tomb. LEUNG claims that he is not the killer. SA goes to find her grandmother and comes across CHU. CHU tells her that they were neighbors and SA frequently visited him.

TIN remembers that the curtains were hanging on the window when the murder happened. Believing that MONG has lied, YI and YUNG go to question him. MONG does not admit telling lies. HUNG recalls the case and accuses MONG as the murderer. MONG admits he is the killer. YUNG and YI find the case suspicious. Moreover MONG does not like the wanted criminal. They ask CHU. CHU tells them that MONG has a brother ON who is an idiot. They find him and realize that he is the wanted one. ON tells them what he did. MONG also tells the truth.

SA breaks up with her boyfriend. YI knows that he has a chance. As ON is mentally ill, the government does not accuse him. HUNG is unhappy. Later ON falls down from the roof of the hospital and dies. HUNG is suspected. KWAN has to delay the opening of her restaurant but she still has confidence in it. TIN admires KWAN but KWAN is more interested in HUNG. FAY and HAY are found going into a hotel together. The others are discontented, especially YUNG. YUNG wants to have a baby but CHIT does not agree. Later YUNG finds her being on pills.

YUNG and CHIT have a quarrel. CHIT and her colleagues go to Mr. CHUNG's house to have dinner. HAY is not there. YUNG comes to take her. They forget each other. YUNG worries as FAY has not been heard for days. YI explains for FAY but YUNG links FAY and HAY up for HAY's disappearance. From some fingerprints, YUNG finds that HAY has spent some days in Larnma Island Hotel. Moreover HAY had withdrawn two million dollars before she disappeared. They suspect FAY. YUNG does not know what to do. Later a corpse is discovered and they suspect that it is FAY.

After investigation, it is certain that the dead man is FAY, YUNG's brother, YUNG is in deep grief, He works round the clock, hoping he can find the killer, He recalls that FAY has fought with YIP WAI, TIN finds MAR HO HING, who is believed to be the last one seeing FAY before he was killed, HING admits that she met FAY but nothing was special, She only informed FAY that HAY wanted to leave him, YUNG's father and younger sister come. They are also very sad. From the record on blood type, YI discovers that HAY's son is not HOI's. Instead FAY may be his father. On the other hand, LUNG finds a video tape shot by FAY. She gives it to YUNG.

From the video tape, they realize that FAY and HAY did not commit adultery. HAY was raped by WAI before her marriage and WAI continued to blackmail her, FAY went to argue with WAI after he learnt the case from HAY. YUNG arrests WAI but WAI has witnesses to prove him not guilty, At the same time, JIMMY, who is HOI's employee, is poisoned and dies. From JIMMY's girlfriend, YUNG knows that JIMMY saw HAY after FAY had been killed. YUNG finds it strange. CHIT watches television and sees CARMAN, YUNG's ex-girlfriend. CHIT is annoyed with some bits of terrible memory. YUNG realizes that JIMMY did not see HAY. It was somebody else. He goes to HOI's house with YI immediately. When they arrive, there is an explosion.

YUNG, HOI and HAY are hurt and sent to hospital, WAI is killed in the explosion. Ignoring CHIT'S warning, YUNG questions HOI, HOI admits that he had falsely blamed HAY and FAY, so he tried to kill them with HING's assistance, As JIMMY had seen HING at the scene, HING killed him, Later they realized that they had made a serious mistake, Thus they tricked WAI and tried to kill him with the explosion, FAY's case is solved. HING also dies as she has been injured seriously. At the same time, the gap between YUNG and CHIT continues to widen.

YUNG and CHIT see YAU and her father off at the airport. YUNG stills feels guilty for FAY's death. CHIT asks YUNG about MAN and YUNG tries to hide the fact. CHIT has no way to find the fact. The others blame TIN for FAY's death. TIN questions YUNG and they have a fight. HUNG wants to transfer TIN to another team but YUNG objects to his suggestion. KWAN asks HUNG to give TIN one more chance and HUNG grasps the opportunity to beg KWAN to marry him. KWAN is impressed. YI brings SA to meet his aunt. His aunt likes SA. LUNG feels jealous but she does not want to spoil YI's love. She claims that she has a boyfriend. SA works as an instructor in the scout center. As she regards YUN as LI, she lets YUN to be taken away. When YUN's father CHEUNG comes and knows what has happened, he worries much.

YUN is kidnapped. YEE and CHEUNG worry. They ask WAI to lend them money so as to save YUN but they are refused. CHIT and KWAN are robbed. Luckily TIN arrives and saves them. However TIN is hurt. CHIT is shocked and recalls some bits of her lost memory. KWAN visits TIN but she is discontented with his rude behavior. She slams him. CHEUNG and YEE worked for WAI and CHEUNG had to stay in hospital for a year as he was knocked down by a car when he wanted to protect WAI. YUN was given birth in the period. YI questions YEE and YEE admits that she was raped by WAI and YUN is WAI's daughter. CHEUNG has mercy on her and still accepts her. When it is found that the kidnap is arranged by WAI's son KAN, WAI changes his attitude and agrees to lend them eight million dollars. CHEUNG gives the money to a magician in Ocean Park and the money vanishes.