Stack Jackson, a young African American man, engages in a drug deal while watching a traditional Chinese dance group in a Hong Kong theater. When he steps outside, Charlie, another African American, appears with a gang of Asian men. Stack punches him, then runs back into the theater, but Charlie catches Stack backstage and shoots him dead. Stack’s body falls through a scrim onto the stage in front of a horrified audience. Days later, Diana “TNT” Jackson, Stack’s sister and a martial artist, arrives in Hong Kong to find her brother. As she roams the streets, TNT is attacked by six men, but she single-handedly fights them off. Elaine, another American, sees the fight and offers TNT a ride to “Joe’s Haven.” When TNT refuses to discuss her reason for being in Hong Kong, Elaine advises her that Hong Kong is not safe for Americans. TNT enters Joe’s Haven to discover a combination nightclub and a martial arts training center and learns that “Joe” is a Chinese martial artist. Joe explains he has not seen Stack for days and hands TNT a letter she sent that Stack never picked up. As they talk, a group of men harass a waitress. Joe attempts to intervene and a fight erupts. Charlie enters in time to see TNT jump in and send the men running. Charlie enters and later asks why TNT is in town and she claims to be looking for work. Charlie tells her he will keep his eyes open for any opportunities. He then goes to a mansion where he is greeted by Elaine, who escorts him to Sid, a white American making a deal with Ming, a Chinese heroin dealer. Charlie reports that TNT is no threat. The next day, Joe goes to the theater to investigate Stack’s disappearance and learns of his murder. Two men appear with guns and chase Joe into the theater. A gun battle erupts, ending with Joe shooting both men dead. Back at Joe’s club, Charlie introduces TNT to Sid, Ming and Elaine. After Sid makes a racist remark, TNT tells him to go to hell and leaves. Charlie catches TNT and warns her that she has made an enemy. Later that night, after Joe informs TNT that Stack has been killed, she vows to avenge her brother’s death. Across town, Ming’s men transport a heroin shipment when they are ambushed and killed. The next day, Ming voices his suspicions that TNT was involved, but Charlie insists it was an inside job and volunteers to personally handle the next shipment. Later, Elaine meets Gary, a well-dressed Asian, and informs him that another drug shipment is scheduled. After hearing that Charlie is recruiting fighters, TNT breaks into his compound and offers her services. Charlie fights TNT to check out her skills, then takes her home for a drink. Meanwhile, Ming insists Sid order TNT’s death, but Elaine suggests they wait to see whom she is working for so they can retrieve the stolen drugs. Days later, TNT and Joe follow Charlie to a cemetery and watch as the drug deal is being brokered. Joe spots Elaine hiding behind a tombstone and they give chase. TNT catches Elaine, and after a brutal fight, knocks her unconscious. Meanwhile, Charlie’s car is shot up, and the drug shipment stolen. At Sid’s insistence, Charlie allows Ming to interrogate TNT. Back at the nightclub, Elaine reveals she is a government agent. When Ming and Charlie appear, Elaine claims TNT was with her the whole day. Ming is unconvinced and that night he captures TNT to torture her. At first he threatens to burn her with his cigar, but then attempts to rape her. TNT head butts him, kills the lights, and fights Ming’s men in the dark. When Ming turns the light back on, TNT is gone and his men are unconscious. The next day, Ming informs Sid that their suppliers are refusing to advance credit on another shipment. Elaine suggests Sid meet the suppliers directly and, despite Ming’s protests, Sid agrees. Later, at Joe’s nightclub, Charlie comes looking for TNT, and when Joe refuses to disclose her location, Charlie orders his men to torture one of Joe’s waitresses until he talks. Charlie finds TNT on a houseboat, and, boasting that he is about to take over Sid’s operations, asks TNT to be his woman. After making love, Charlie lights up a cigarette with a gold lighter TNT had given Stack. Before she can decide what to do, a messenger arrives to summon Charlie to meet Sid at the mansion. After Charlie leaves, a bruised Joe appears. From what little TNT overheard from the messenger, Joe deduces where Sid is meeting the drug suppliers. The next day, Ming, Sid and Elaine fly to a small island celebrating a major festival. Elaine tells Sid she is going shopping, but instead meets with her agent, Gary, and tells him the time and location of the drug lord’s meeting. Elaine looks out a window and sees TNT and Joe. Elaine confronts TNT, demanding she leave the island, but TNT refuses. Elaine then orders Gary to make her disappear. Gary goes to the police and convinces them to arrest TNT. That night, Elaine is changing her clothes when Sid and Ming drag a beaten Gary into the room. After slapping Elaine around, Sid orders his men to kill Gary and guard Elaine until after the meeting. Meanwhile, Joe creates a diversion by leading a troop of drunken revelers into the police station. He picks the lock of TNT’s cell and they escape in a Chinese dragon costume. They only get ten yards from the station when police discover TNT has escaped and give chase. Back at the hotel, Elaine overpowers her guards. At the conference, the drug lords refuse to advance Sid credit for heroin, demanding cash on delivery. Charlie offers to buy the shipment with the money he stole from Sid. When Sid protests, Charlie chops him in the throat and claims the mantle of gang leader. Ming, refusing to follow Charlie, orders his men to attack Charlie’s bodyguards. Both Elaine and TNT appear and leap into the fray, then the police, who were chasing TNT, arrive. Both Charlie and Sid slip out the back, followed by Elaine and TNT. Elaine spots Sid and hurls herself at him, smashing through a paper wall and falling two stories to the lobby below. TNT catches up to Charlie in the ballroom and reveals herself to be Stack’s sister. The two battle until TNT throws a punch that sends her fist through Charlie’s chest and out the other side. She falls to her knees by Charlie’s dead body.