Sunny is a naïve circus performer who dreams of inheriting his father's knife-throwing skills. However, his hostile colleagues continue to bully him, relegating him to a lowly clown. On a tour to Malaysia, Cheung and other performers discover a cave occupied by the Japanese army during World War II. Instead of finding treasure, the performers - including Sunny - are sprayed with a mysterious chemical that turns them into superhuman mutants...
Unfortunately the movie City Under Siege is not yet available on HBO Max.
| Directing | Benny Chan | Director |
| Writing | Benny Chan | Writer |
| Camera | Anthony Pun Yiu-Ming | Director of Photography |
| Costume & Make-Up | Shandy Lui Fung-Shan | Costume Designer |
