Armed Reaction 2021

Hon-sam, Sam-yuen and On-na decide to defuse some time bomb as they cannot wait any longer for EOD people to show up. Hon-sam and On-na are arranged to be protected by staying at some safe house. On-na is thrilled as she realizes she is allowed to “cohabit” with Prince, who she fancies. But Hon-sam just does not like this idea. On-na and her beloved cat move into the safe house. Hon-sam wants On-na to enter into a treaty as Hon-sam is getting more and more annoyed with her. Tat-wah and his mob brother Ng Dan-gei are seeking revenge for Yuen Ying Society boss Ho-nam. They are nearly caught as they go to another gang boss Ching Pak-keung’s sauna place to cause trouble. They then realize they have been taken advantage of as Yuen Ying Society consultant Cheung Yiu-chung reveals the truth. Based on clues provided by Sam-yuen, Hon-sam runs into the bomber at the fast food shop. Naive On-na accidentally angers the bomber.

Hon-sam and Sam-yuen defuse the bomb crisis as they have good rapport. The bomb case is concluded. Sam-yuen encourages On-na to pursue her dream, causing On-na to remind herself of her ambition when she first joined the police force. Tat-wah accidentally accepts an assassination job on Pak-keung. He goes to some old housing estate to reminisce about the old days as he knows he is most probably going to die. He runs into On-na, who has come to explore her roots. Actually, the duo already knew each other many years ago. But they do not recognize each other. To turn down the assassination job, Tat-wah slyly causes himself to be detained at the police station. But his scheme fails, and he then tells On-na some news about Ho-nam’s drug deal. On-na is assigned to a new department as she has solved a case and earned brownie points. But her boss is confrontational Hon-sam!

On-na and Hon-sam are assigned to newly established Cold Case Special Investigation Unit (CCSIU). The duo do not get along. Hon-sam vents this frustration on Chin-chiu as he realizes his team members are lethargic and do not care about their assignments. Some new clues are gathered in a cold case. CCSIU is investigating Mr and Mrs Wan’s missing daughter Ching-ching case. Tat-wah and Dan-gei take shelter in Yiu-chung’s place. They are assigned the task of guarding some remote minibus station. Because of this, they encounter Kin Kwan Cafe’s pretty owner Hui Chin-ying. The duo are certain this is a chance to make career progress as they also find out Yuen Ying Society boss Master Kam is a regular Kin Kwan customer. Hon-sam suspects Mrs Wan has killed her daughter. However, Hon-sam and Sam-yuen have different opinions about whether Ching-ching is still alive. Meanwhile, Mr Wan receives a “letter” from his missing daughter.

Mr Wan is about to break up with Mrs Wan as he is again preoccupied with whether their daughter is still alive. Although Hon-sam and Sam-yuen see this case from different perspectives, but Hon-sam begins to like her. On-na discovers some clue in Ching-ching’s letter to Mr Wan. She coaxes the perpetrator into showing up. The case is solved, inspiring Sam-yuen to realize Ching Fung is always on her mind. She resolutely decides to ditch Hon-sam, who she has just fallen in love with, and go overseas to pick herself up again. CCSIU investigates an indecent assault case and uses team member Fong Siu-kiu as bait to lure the sex maniac into showing up. During the pursuit, Tat-wah flees because he is carrying a gun. But Hon-sam wrongly thinks he is the sex maniac. Tat-wah exactly bumps into On-na.

On-na has lost her gun during her pursuit after the sex maniac. She runs into Tat-wah when she sneakily returns to the incident location to look for it. During their conversation, hopeless On-na mentions why she decided to become a policewoman. Hon-sam just has to vent his frustration on his subordinates. He reprimands On-na for her incompetence. He also scolds other team members. On-na is not giving in. She declares she will catch the sex maniac within seven days. Chin-chiu fetches his mother-in-law Yung Law Mei-lan from work. Mei-lan despises Chin-chiu for being much older than her daughter Yung Chu-dik. Chin-chiu is embarrassed as she also deliberately makes his life difficult. On-na is willing to be used as bait for luring the sex maniac into showing up. Tat-wah offers a helping hand as he empathizes with her. Hon-sam does not believe On-na could restrain the sex maniac by herself. He keeps questioning her about what happened during the arrest.

While Tat-wah is going to meet up with On-na, he runs into Hon-sam, who is tailing On-na. The duo start an argument. Tat-wah raises a glass bottle and points it at Hon-sam. On-na sees what is happening. Hon-sam coaxes team members into going to the countryside to undergo coaching. He scolds team members for lacking team spirit. Hon-sam is disappointed at team members’ performance. Team members keep complaining as Hon-sam then takes the chums to the gym to undergo more training. They form small groups to resist Hon-sam. While team members are undergoing training, they run into Leung Siu-hei and his elite subordinates. They are also provoked into attempting to find out which team is better. Hon-sam and Siu-hei are having a one-on-one fist fight. Team member react coolly after Hon-sam knocks Siu-hei down. Kin Kwan is doused with red paint. Tat-wah and his chums rush to the eatery. The situation is becoming dangerous as they are ambushed by assailants.

Honsam demands CCSIU undergo hellish training.Team members are really suffering.Team members are implicated as Onna avoids target practice.She is willing to accept criticism.Team members are moved as she resorts to completing their tasks all night long by herself.Onna’s colleague Chung Yatdin knows Onna deliberately avoids target practice.The duo team up to pretend they are hurt so that they could be excused.Team members become even more hostile towards Honsam as he inadvertently hurts Onna.Meanwhile, Yiuchung settles issues between the two shops for Chinying as he becomes a shareholder of the eatery.Yiuchung, Tatwah and Dangei have also developed a brotherly relationship.Chinying has a secret crush on Yiuchung.Onna, who is convalescing, remotely instructs team members on how to solve cases.Team members also regard Onna as their leader.They are united in their resistance against Honsam.Honsam is not happy with Onna.Chinchiu persuades Honsam to win team members back by starting withOnna

Hon-sam suddenly goes to On-na’s home to pay On-na a visit. He seemingly wants to sincerely repair his relationship with On-na. On-na supposedly goes along with him. But she gets angry and expels Hon-sam from her home when she turns her head and sees Hon-sam scolding her beloved cat behind her back. Chin-chiu suggests Hon-sam use some maneuver that involves Hon-sam getting drunk in front of On-na, pretending to be pathetic and kneeling down to ask her to resume duty. On-na asks Hon-sam to enter into a treaty. From now on, subordinates are to undergo training according to her methods. She also uses Hon-sam’s drunken clip as a threat. While On-na is investigating a homicide case, she discovers tutorial little brother’s name in the victim’s phonebook. She then tries to dial the number. Hon-sam realizes Chin-chiu is hiding his tracks. He tails Chin-chiu to some old-fashioned building and surprisingly sees Chin-chiu being knocked down by someone, who turns out to be Tat-wah!

Tat-wah gives On-na the cold shoulder. He accuses her of not keeping her promise all those years ago. On-na wants to make it up to him. After much effort, she eventually finds some unique robot which Tat-wah has always wanted. On-na feels hurt as Tat-wah is ungrateful. Pak-keung takes Tat-wah and Dan-gei hostage as he is accused of extortion. Pak-keung wants to sort things out with Yiu-chung. Yiu-chung reveals Pak-keung has been profiting himself. He seizes this chance to take over some bar venue that has been managed by Pak-keung. Vengeful Pak-keung slyly drugs and kidnap Yiu-chung. CCSIU follows up on the homicide case. They sense the story is rather complicated as they discover names of persons who had died in previous two years in the victim’s phone’s contacts list. They also notice some deceased persons have common characteristics. They suspect the perpetrator has some specific aim. On-na is then worried about Tat-wah’s safety.

On-na reveals Tat-wah was a tutorial litter brother. Hon-sam just does not care. He is certain that he is investigating a big case involving some serial killer. He is also competing with Crime Unit. On-na diligently participates in investigation activities as she is worried about the killer targeting orphans. Master Kam chooses to ignore society’s important matters as he insists on repairing Chin-ying’s bicycle, causing Yiu-chung to feel Master Kam is fussing over her. CCSIU finds out the victims were all survivors. Some psychologist tells On-na and Hon-sam a survivor’s behavior become self-destructive due to self-blaming. Hon-sam reckons Tat-wah fits the profile of a self-destructive survivor. Hon-sam deduces that the perpetrator’s killer instinct is aroused as they are jealous of survivors being able to start new lives. He also finds out Tat-wah had beaten victim Wong Kei-on up.