Martial arts and cinema action superstar Jet Li plays Liu Jiuan, China's top government agent, who arrives in Paris from Shanghai to carry out a sensitive, top-secret mission. Liu becomes trapped in a vast and deadly conspiracy, accused of a murder he did not commit and on the run in a city he doesn't know.  With nowhere to turn, Liu is thrown together with an American woman, Jessica, who has been forced into prostitution.  As Jessica and Liu go up against the cunning and ruthless adversary who set their respective traps in motion, Liu makes a promise to Jessica that could compromise his career - and even his life.