City Under Siege

Chun sing gai bei is a movie starring Aaron Kwok, Qi Shu, and Jing Wu. When circus clown Sunny gets transformed into a super-powered mutant, he finds himself pitted against his fellow performers, who were altered in the same...
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...