Jackie Chan stars as Eddie Yang, a resolute Hong Kong cop who suffers a near fatal accident while investigating a case involving a mysterious medallion. Eddie soon discovers that with the powerful medallion in his possession, he gains incredible speed, strength and skills – taking his martial arts abilities to a whole new level. Enlisting the help of British Interpol agent Nicole James (Claire Forlani), Eddie is determined to learn the secret of the medallion and face down the evil Snakehead (Julian Sands) who wants to use its awesome powers for his own nefarious plans.