Set 15 years in the future in post-earthquake California, where San Diego and Los Angeles are merged into one city, two teenage brothers have half of a powerful ancient Chinese talisman. Millionaire Koga Shuko (a.k.a. Guisman) has the other half and determines to get the brothers' half in order to have the complete medallion and the absolute power of the magical Double Dragon talisman.

While kung fu warriors and otherworldly spirits battle over the fate of two women, Russell's swaggering idiot manages to knock himself out or underestimate the forces he's dealing with. Jack Burton, a tough-talking, wisecracking truck driver whose hum-drum life on the road takes a sudden supernatural tailspin when his best friend's fiancee is kidnapped. Speeding to the rescue, Jack finds himself deep beneath San Francisco's Chinatown, in a murky, creature-filled world ruled by Lo Pan, a 2000-year-old magician who mercilessly presides over an empire of spirits. Dodging demons and facing baffling terrors, Jack battles his way through Lo Pan's dark domain in a full-throttle, action-riddled ride to rescue the girl.