Ko Da-fu (Chin) is the leader of a five member hit squad that only accepts contracts taken out on visitors, not native Hongkies. After years in the business, Ko's reaction time and reflexes are starting to slow down and he barely escapes when attacked by a gang of assassins on rollerskates. His four partners are not so lucky, ending up as victims of the Wa-hing triad gang, who sought to avenge a Japanese associate that one of Ko's men terminated. The Wa-hing bosses (including Kwan Hoi-shan, Lau Siu-ming, and Chan Shen) decide to spare Ko's life, in deference to the fact that he used to be with the gang, a decision they soon regret. Fleeing to Sai Ying Pun, where he used to work as a coolie, a severely injured Ko is nursed back to health by local girl Ton Ke-yee (Cecilia Yip Tung). However, he is far from safe, the victim of a conspiracy with far reaching implications for the Asian underworld, and will need the help of slovenly but determined Inspector Chung (veteran martial arts star Yueh Hua) to emerge alive.