In the Line of Duty 4 (1989)
Two detectives find themselves entangled in a high-stakes battle against a drug-trafficking network with possible links to global organized crime. Their partnership is fraught with tension as they navigate this dangerous case. Meanwhile, Luk Wan-Ting, an unsuspecting immigrant dock worker, becomes an unwitting pawn when he witnesses the assassination of an intelligence agent. Framed for the murder, Luk must evade capture while the detectives race against time to uncover the truth and dismantle the criminal operation, ultimately intertwining their fates in a gripping showdown.
