Officer Chan Ka Kui manages to put a major Hong Kong drug dealer behind the bars practically alone, after a shooting and an impressive chase inside a slum. Now, he must protect the boss' secretary, Selina, who will testify against the gangster in court.
- Year: 1985
- Country: Hong Kong
- Genre: Action, Crime, Thriller
- Studio: Golden Way Films Ltd., Paragon Films Ltd., Orange Sky Golden Harvest
- Keyword: martial arts, kung fu, undercover, gangster, chase, fistfight, sword fight, murder, car crash, organized crime, police chase, hong kong, action hero
- Director: Jackie Chan
- Cast: Jackie Chan, Brigitte Lin, Maggie Cheung, Bill Tung, Chor Yuen, Charlie Cho