Flash Point (Cantonese)

Sergeant Ma Jun of the Major Crimes Unit is hell-bent on taking down criminals, but his aggressive tactics often land him in hot water. The police have been gathering evidence against the Vietnamese gang led by the three brothers—Ah Cha, Tony, and Ah Hu—and send undercover cop Watson to infiltrate their ranks. The brothers are ruthless and will stop at nothing to eliminate their enemies. When Ah Cha is arrested, Tony sees through Watson's cover and decides to kill him and all other witnesses to free his brother. With Watson's girlfriend Qiu Di taken hostage, Watson is forced to drop his testimony. As Watson and his girlfriend are held captive, Ma Jun takes Ah Cha to rescue them.