Walk on Fire is a 1988 Hong Kong action film directed by Norman Law and starring Andy Lau and Cherie Chung.
Plot
In Macau, criminal Tong Heung-tung of the Hunan Gang, who bombed the Hong Kong police headquarters, was being send back to Hong Kong by Kowloon OCTB inspectors Lee Ho-lung and Lo Mo. During the process, the police van was ambushed by the Hunan Gang who helped Tong escape. Lee chased the gang all the way past the Mainland border and arrested them causing mass destruction which maddened his superior officer Chan.
Complaints Against Police Unit inspector Lau Kwok-wah is Lee's good friend. During one night while Lau, Lo Mo, Lee, his wife and daughters were dining, Lee's informant Miss Chung came for help. Leader of the Hunan Gang, Wai, used Chung to lure Lee out to seek revenge for his brothers. When Lee made it to Chung's house, he fought with Wai's henchmen before being knocked out by Wai. Chung was also knocked and pretended to be unconscious and heard everything the gang said. After she got up, she left her house but the gang chased her and she mistakenly thought that she killed one of the henchmen. Wai and his gang brought Lee to the pier and brutally beat him before making him drunk and having him drive himself into the ocean, killing him.
The next morning, Lee's wife, May, gave birth to a baby boy and was saddened when she heard of her husband's death. When she retrieved Lee's belongings at the police station, Lau told Chan that Lee's death was suspicious which Chan refused to believe. Lau and Lo Mo decided to investigate Lee's death and first, tries to find Lee's informant, Chung. They saw Chung crashing out of a nightclub and was harassed by narcotic officers before Lau went to the rescue. Lau and Lo Mo took Chung to a restaurant where Chung escaped. Just as expected by the two, she went to her grandmother's house where the Hunan Gang attempted to kill them by burning the house. Lau and Lo Mo came to rescue them. Lau took Chung to the police station where she told Chan that she saw Wai and his gang taking Lee, which Chan still refused to believe. Chan had his own inefficient ways to arrest the Hunan Gang and refused to let Lau interfere.
Angered, Lau decided to take this case in his own hands. Lau also allowed Chung to stay in his house since she had nowhere to stay. There, Chung agreed to help Lau find the head of the Hunan Gang, Squid Chiu, when he jokingly threatened her that he would use her as bait to catch the Hunan Gang. Chung took Lau to see a low-life Triad member, Al, to help them get Squid Chiu to cooperate with Lau. When Al refused, Lau revealed that he had used Al's name to call Chiu and would either frame him for drug possession or that he had betrayed Chiu. Al agreed to help when Chiu arrived and told him about Lau, posing as the son of a jewelry store owner, wanting him to rob his store. Afterwards, Lau rewarded Al with what Al thought was heroin but was actually laundry detergent.
When Chiu wanted to take a look at Lau's jewelry store, Lau asked Lo Mo for help to have his future father-in-law lend him his store. Lo Mo's girlfriend told them that her father would not be at the store if a girl could take him out. They thought of a plan to have Chung to go out with him.
Chung, who was addicted to drugs, had two heroin-laced cigarettes in her purse. Lau however threw these cigarettes down the toilet before leaving with her and encountered a traffic jam. As a result, they ran and made it to the store just on time. When Chung's addiction came while at the store, Lo Mo quickly got some methadone for her before she proceeded to leave with Lo Mo's father-in-law and Chiu arrived right after.
At home, Lau scolded Chung telling her that she almost foiled his plan and to stop using drugs while Chung blamed him for throwing her cigarettes away. At night, Chung cried and told Lau that it was not easy to quit drugs with no support. Lau then promised Chung that after avenging Lee, he would take her to a quiet place in Lantau Island and help her quit it.
The next day, Lau gave a call to Chiu, who wanted HK$200,000 before staging the robbery. Lo Mo went to Chan for help, who refused to do so. When Chung told them that a Taiwanese drug dealer was coming to Hong Kong the next day, Lau thought of a plan to rob him. At first, the timid Lo Mo refused to join before Lau told him that Lee treated him as a best friend and advised him to do it for avenging his friend, to which Lo Mo finally agreed to help.