Super-soldier recruit Tsui Chik is forced to escape with his comrades after the project is canceled. Months later, he's trying to have a quiet life as a librarian with his best friend, Inspector Shek Wai-Ho. However, a string of vicious gangland murders begins that has all the markings of Tsui's former compatriots who seem to have turned to crime. Realizing that the police are helpless, he decides to take them on himself. With a disguise, Tsui becomes the mysterious superhero known only as Black Mask.

Jet Lias Tsui Chik / Black Mask
Lau Ching-Wanas Inspector 'Rock' Shek Wai-Ho
Karen Mok Man-Waias Tracy Lee
Françoise Yipas Yeuk Laan
Patrick Lung Kongas Commander Hung Guk
Anthony Wong Chau-Sangas King Kau
Xiong Xinxinas Jimmy
Sze Mei-Yeeas Chief of Library
Roy Szeto Wai-Cheukas Szeto
Tony Cheung Tung-Leung