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Hong Kong director Teddy Chen follows up on his hit Downtown Torpedoes (1997) with this breathless action flick that recalls the South Korean mega hit Swiri (1999). Just as Hong Kong's new airport is set to open, a band of terrorists strike a Korean cargo ship, but they leave behind three encoded computer discs and Todd Nguyen (Daniel Wu), an American-educated Cambodian-Chinese man who has complete amnesia. Anti-terrorist cop Ma Li (Emil Chow) and psychiatrist Shirley Kwan (Joan Chen, whose voice is dubbed into Cantonese) struggle to turn Todd against his comrades and to wrest the secrets from his blanked memory. Meanwhile, Soong (Kam Kwok-leung), the crazed leader of the terrorist group, and his sexy sidekick Guan Ai (Josie Ho), plot to unleash a deadly chemical weapon somewhere in Hong Kong.