Armed Reaction 2021

Policewoman Tai On-na realizes her latest boyfriend is again not the right guy. She keeps dreaming of SDU Prince Mung Hon-sam coming to her rescue. Some hostage incident takes place at a fast food shop. On-na also happens to get stranded inside. Hon-sam, who is somewhere outside, wants On-na to liaise with him. But On-na’s cowardice alerts the kidnappers. She also accidentally touches some bomb. Hon-sam looks down on On-na as he reckons she is mediocre police officer. But On-na has certain forte. Her years of experience in Records Office coupled with her attention to detail have enabled her to gain thorough understanding of personnel relations at the police station. Hon-sam is urgently requested to assist Superintendent Chan Sam-yuen in foiling some drug deal. Gangster Lau Tat-wah happens to show up to cause havoc. Tat-wah unwittingly helps Sam-yuen catch the drug dealers. On-na runs into Tat-wah at the police station. She somehow feels she knows him.

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.