An ex-soldier returns to his alma mater as a teacher and deploys unorthodox techniques to inspire an unruly group of would-be dropouts. Donnie Yen, Joe Chen, Jack Lok, Yu Kang, Bruce Tong Kwan-chi, Chris Tong Kwan-yiu, Gladys Li, Gordon Lau, Lin Qiunan, Dominic Lam, Alfred Cheung Added on Amazon Prime 2023-02-05. Youtube Trailer