Armed Reaction (Chinese: 陀槍師姐; Jyutping: to4 coeng1 si1 ze2) is a 1998 Hong Kong modern cop drama produced by TVB.

[1] The drama takes place before 1997 Handover of Hong Kong and Royal Hong Kong Police revolves around the lives of two police woman, one who works leisurely behind desk duty but has to take her job more seriously once her husband leaves her and a new rookie cop who is deemed too ambitious and rash by her superior.

She works leisurely behind the desk at the police station waiting for the day to end so she can go home to her loving husband and obedient young son.

However, things took an unexpected turn when her boss's wife thought So-Ngo was having an affair with her husband and had her transferred to the Patrol Unit.

[2][3] The show has come under attack for reusing story lines, recycling characters and actors as well as having illogical sequencing in storylines.