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 Li
as Tsui Chik / Black Mask

Sean Lau Ching-Wan
as Inspector 'Rock' Shek Wai-Ho

Karen Mok Man-Wai
as Tracy Lee

Françoise Yip
as Yeuk Laan

Kong Lung
as Commander Hung Guk

Anthony Wong Chau-Sang
as King Kau

Xiong Xinxin
as Jimmy

Henry Fong Ping
as Ricky Tai

Sze Mei-Yee
as Chief of Library

Roy Szeto Wai-Cheuk
as Szeto