After using the Pandora's Box, Joker finds himself stuck centuries in the past, where he encounters his old master and an array of villains. Lu Shuming, Ada Choi, Jeffrey Lau, Kit Ying Lam, Stephen Chow, Kin-Yan Lee, Law Kar-Ying, Athena Chu, Ng Man-Tat, Karen Mok, Man-Tat Ng, Ng Mang-tat, Stephen Chow, Ada Choi, Athena Chu, Karen Mok, Kit Ying Lam, Jeffrey Lau, Law Kar-ying, Kin-Yan Lee, Lu Shuming, Jeffrey Lau Added on Netflix 2021-09-01. Youtube Trailer