City Under Siege

City Under Siege (simplified Chinese: 全城戒备; traditional Chinese: 全城戒備) is a 2010 Hong Kong science fiction action film directed and co-written by Benny Chan. The film follows a group of circus performers who goes on a rampage after an accidental exposure to chemical gas left by the Japanese army in World War II, granting them superhuman abilities. Sunny is the orphaned child of a former knife throwing master. After his father's death, he is taken in by his uncle, who allows him to perform as a clown, since he did not inherit his father's knife throwing skills. Sunny still wants to be a knife thrower, though. He is tormented by his cousins, who are all performers in his uncle's troupe. One day, Sunny overhears a plan the rest of the...