In a tea house in Hong Kong, Officer "Tequila" Yuen and his partner Benny attempt to arrest a group of gun smugglers while they are making a deal. After an ambush from another gang member, a fierce gun battle breaks out. The gangsters are defeated but with several police officers badly wounded, and Benny is killed. Tequila, seeking revenge, decides to kill the gangster who ambushed them, rather than arrest him.