In a Hong Kong
teahouse,
Royal Hong Kong Police inspectors "Tequila" Yuen and Benny Mak surveil a group of
gun smugglers while they are making a deal. When a rival gang ambushes the deal, a fierce
shootout breaks out; the gangsters are defeated, but several police officers and civilians are wounded and Benny is killed. As revenge, Tequila executes the gangster who killed Benny rather than arrest him. He is reprimanded by Chief Superintendent Pang, who needed the executed gangster as a key witness. After a police funeral, Pang burns the personnel file of another smuggler Tequila killed, revealing him to be an
undercover cop. Meanwhile, Alan, an assassin working for Triad boss "Uncle" Hoi, murders one of Hoi's subordinates who had double-crossed them for a rival syndicate led by upstart Johnny Wong. Wong, who is looking to usurp the old Triad bosses through his control of the illicit arms trade, is impressed by Alan's skill and attempts to recruit him. Alan reluctantly accepts the offer, and Wong brings Alan to a raid on Hoi's warehouse as an
initiation, where many of Hoi's men are killed. Surrounded, Hoi lets Alan kill him to spare his surrendering men, but Alan kills them all anyway to please Wong. Tequila, who has been watching from cover, ambushes and defeats Wong's men, but is caught by Alan, who spares him. Tequila confronts Pang, demanding to know if Alan is an undercover cop. Pang refuses to say, but reveals the teahouse
friendly fire killing to Tequila and warns him to stay away from the case. Tequila tracks Alan to his sailboat and deduces he is undercover, but they are ambushed by the remnants of Hoi's gang. The pair fight off the attackers and Tequila flees just before Wong arrives, allowing Alan to keep his cover. Wong realizes that one of his lieutenants, Foxy, is a police
informant. Wong's henchman, Mad Dog, beats Foxy before Alan is ordered to execute him with a shot to the chest, but before that he manages to place
cigar lighter in Foxy's chest pocket that saves his life. Foxy finds Tequila at a jazz bar and informs him that Wong's armory is hidden in a vault beneath the Maple hospital. As Tequila takes Foxy to the hospital, Wong discovers that Foxy is alive and sends Alan to kill him, while also discreetly sending Mad Dog to monitor Alan. At the hospital, Alan confronts Tequila, demanding to know the whereabouts of the vault; while the two are distracted, Mad Dog kills Foxy. Alan and Tequila discover Wong's vault, where they briefly skirmish with Mad Dog. As Pang, officer Teresa Chang, and other inspectors evacuate the hospital, Wong and his men attempt to gain leverage by taking the staff and patients hostage while indiscriminately shooting fleeing patients and responding police officers, irritating Mad Dog with his callousness. Alan and Tequila team up to rescue the hostages and battle Wong's men; meanwhile, Pang evacuates the lobby and takes command at the police perimeter, while Chang and the
Special Duties Unit rescue trapped babies from the
maternity wing. As they fight their way through the hospital, Alan accidentally shoots a
plainclothes officer and is overcome with guilt; Tequila consoles him by sharing his similar experience from the teahouse and encourages him to fight on. The pair eventually confront Mad Dog again. While Tequila leaves to assist Chang and rescue one last baby, Alan and Mad Dog engage in a tense duel before ending in a standoff with a group of crippled patients between them. They allow the patients safe passage to leave, but Wong arrives and guns down the patients while trying to kill Alan, who escapes. Enraged, Mad Dog tries to kill Wong, but is gunned down by Wong when his pistol runs out of ammunition. Alan and Tequila kill the remaining gangsters and confront Wong, but he detonates bombs in the armory, setting the hospital ablaze and forcing Tequila to flee with the baby while Alan goes after Wong. As the hospital explodes, Wong drags Alan outside at gunpoint and forces Tequila to humiliate himself. Using this as a distraction, Alan wrestles for Wong's pistol and ends up shooting himself in the gut, surprising Wong enough for Tequila to fatally shoot Wong in the head, before collapsing. Alan is revealed to have survived the ordeal. To protect Alan from the Triads, Pang and Tequila destroy Alan's personnel file and declare him dead, allowing him to leave Hong Kong to start a new life. == Cast ==