Highs and Lows

When HEUNG WING meets up with the drug dealer, Senior Inspector WAI SAI-LOK comes to arrest them but HEUNG WING escapes successfully. SAI-LOK discovers from his boss that HEUNG WING is an undercover police from the Narcotics Bureau.

BING-LUNG sends HEUNG WING to the illegal clinic for treatments. SAI-LOK asks the new staff HEI-SUEN to inspect the market. HEI-SUEN feels that SAI-LOK is making fun of her and she feels dissatisfied. SAI-LOK discovers that HOK-LAI’s team is following them and he asks his subordinate to offer coffee to HOK-LAI.

CHAN KIN returns home and is attacked by three masked men. In order to protect himself, CHAN KIN asks HO KWAI and the others to protect him. HEUNG WING knows that BING-LUNG wants to kill him and he tries to slow down the drug-making process.

SAI-LOK asks HEI-SUEN to attend KWOK-TUNG’s mother’s birthday banquet together. HEI-SUEN is shocked to discover many gangsters from the triad society there. HEI-SUEN finds SAI-LOK mingling with the gangsters naturally and she believes that he is acting against the police’s code of conducts.

While KA-PIK is tailing after SAM-KAU and the others, TAK-TIM suddenly arrives and her plan is almost ruined. SAM-KAU discovers that one of his followers is stealing his drugs for sale and he punishes him fiercely. LAU FOOK is startled to witness it. KA-PIK discovers LAU FOOK meeting with HO KWAI and she realizes that he is also a snitch.

CHI-SHING realizes that HOK-LAI has discovered that he is skipping his duty. HEUNG WING assures him that he will take the blame for him. WING-TUNG informs HEUNG WING that she will fight for the custody of their son. SAI-LOK urges KA-PIK to take action.

HEI-SUEN apologizes to SAI-LOK for misunderstanding him. SAI-LOK asks HEI-SUEN to help giving the informer fees to KA-PIK. KA-PIK is shocked to discover that she only gets slightly more than 10 thousand dollars. In order to take revenge for KA-PIK, TAK-TIM tries to fight against SAI-LOK but SAI-LOK makes fun of him.

Reminded by the kindergarten principal, WING-TUNG realizes that she has been ignoring her son’s feelings and she apologizes to her son. TAK-TIM helps his head FAT LION and FAT LION assigns him to manage one of his entertainment venues.

SAI-LOK asks HEI-SUEN to keep an eye on Granny CHOI but HEI-SUEN carries out investigation on YAT-MING secretly. SAI-LOK and HEUNG WING wait for a long time but YAT-MING doesn’t arrive. HEI-SUEN suddenly reports that Granny CHOI is missing. HEI-SUEN rescues Granny CHOI but she falls down from the building.

SAI-LOK and HEI-SUEN return to the factory building for investigation. SAI-LOK discovers how CHI-FAI has escaped. WING-TUNG and HEUNG WING go to dinner together. WING-TUNG suddenly discovers her boyfriend quarrelling with somebody and she is surprised. HOK-LAI learns that the number of drug-taking venues in Sham Shui Po has increased a lot and he asks HEUNG WING to carry out investigation.

SHUI-KI and SAI-WING are monitoring HEUNG WING’s team secretly. HEUNG WING brings his team to capture CHI-FAI but he discovers that the person is not CHI-FAI. SHUI-KI discussed the corrupt cop issue with SAI-LOK and HOK-LAI asks to join their investigation. When HOK-LAI is arguing with SAI-LOK, they learn that HEUNG WING’s team is leaving the police station secretly.

SAI-LOK leaves a note to HEI-SUEN, asking her to help informing his boss that he will take a day off. The anniversary of KA-PIK’s mother’s death is coming. She goes to their old house in Lamma Island with KA-CHUN and TAK-TIM. WING-TUNG goes to HEUNG WING’s home to visit their son.

WING-TUNG carries out investigation at London Gold Investment Company by pretending to be a housewife. WING-TUNG tries to get close to the manager SUNNY. SUNNY is interested in her and he invites her to discuss the investment account matters in the hotel. WING-TUNG steals SUNNY’s phone data successfully.

HOK-LAI and HEI-SUEN joins the Asia Shooting Competition together. They become the champions and HOK-LAI believes that HEI-SUEN is his perfect match. WING-TUNG receives the investigation report and she is shocked to discover that CHEUK-LUN is involved in money laundering.

HOK-LAI asks HEI-SUEN to help selecting his father’s birthday gift. HOK-LAI’s mother even invites HEI-SUEN to join the birthday dinner. HOK-LAI lies to his mother that his girlfriend HOI-YING wants to separate with him. Later, HOK-LAI reveals to HOI-YING that he wants a separation.

SAI-LOK and HEI-SUEN pretend to be the waiter and the waitress. However, the mad drug dealers suddenly grasp SAI-LOK and escape by car. On the other hand, HEUNG WING discovers CHEUK-LUN’s car. SAI-LOK finally escapes from PETER’s grasp but he discovers CHEUK-LUN’s subordinate pointing a gun towards HEUNG YEUNG. SAI-LOK tries to protect HEUNG YEUNG with his body.

WING-TUNG sneaks into WAN-YEE’s office at night to carry out investigation and WAN-YEE discovers her. HEUNG WING arrives to rescue her by pretending to be a security guard. WAN-YEE recognises that HEUNG WING was a senior schoolmate in her secondary school. KA-PIK offends a gangster in the pub.

CHI-HUNG buys a flower shop for KA-PIK. A man suddenly comes to attack CHI-HUNG and KA-PIK beats the man with a glass bottle. KA-PIK is injured and CHI-HUNG sends her to the hospital. CHI-HUNG’s subordinate informs him that CHIU SAM-KAU is the one who arranges the attack.

CHI-SHING, YAU-FU and HO KWAI discover that HEUNG WING has lent them over 1 million dollars already. HEUNG WING reveals that he has mortgaged his house and all the others feel very grateful. HEUNG WING asks WAN-YEE to tell him who is the drug supplier. He arrests the person but later discover that this is only a small dealer.

SAI-LOK blames HOK-LAI for asking KA-PIK to be his snitch. HOK-LAI claims that he will assign a team to rescue KA-CHUN besides chasing after the drug dealers. KA-PIK learns that CHI-HUNG’s soy sauce factory has sent out the goods and she informs SAM-KAU. SAM-KAU threatens CHI-HUNG by capturing KA-PIK. SAI-LOK and HEI-SUEN discover that KA-PIK is in danger.

TAK-TIM resorts to drink in the pub. Afterwards, he decides to go to HOK-LAI's office and kill him. KA-PIK rushes to the place and she discovers TAK-TIM falling down from the building. SAI-LOK believes that HOK-LAI will try to get back the drugs with Columbia drug dealers.