Rock N'Roll Cop is a 1994 Hong Kong action crime drama film produced and directed by Kirk Wong, starring Anthony Wong Chau Sang, Wu Hsing-kuo, Yu Rongguang, Carrie Ng and Chen Ming Chen.
After dinner, when Captain Wong's mentor is walking back home, Shum Chi-Hung and his fellows, known as the 'Chun-Lei Red Scarf', seek revenge and killed him.
Hung asked to leave Shenzhen, but he also helped Wong to break the codes related to the 'Chun-Lei Red Scarf' before he left.
In order to control the situation, Captain Wong's team deliberately separated the Hong Kong police officials and destroy their plan.
Finally, Wong saved Hung from danger and killed Chi-Hung in a rural village in Hong Kong.