The final entry in Michael and Johnny Mak's Long Arm of the Law series, Underground Express once again tells a story of gangsters versus police, focusing on the difference between how both factions act depending if they're coming from Hong Kong or Mainland China.

A gutsy police detecive and his team of cops probe into the widespread illegal dealings of a criminal mastermind who schemes to redeem himself by running for government office in taiwan.

This sequel to the critically-acclaimed box-office winner Long Arm of the Law maintains the same stark realism of the original. In Saga Two, the Royal Hong Kong Police put into operation a new plan to counteract the problem of increasing violent crimes committed by new arrivals from across the border in China. In agreement with Chinese authorities, three Hong Kong detectives go undercover as illegal immigrants in order to infiltrate the powerful gang that is organizing the crime wave. The action is tough and graphic, reminiscent of The French Connection, Hong Kong style.

A recently married scholar goes on a quest for knowledge of other people's wives, based on his philosophical differences with the Sack Monk. He encounters the Flying Thief, who agrees to help him find women, but only if he attains a penis as big as a horse's. The scholar has a surgeon attach said unit, and he's off and running on his mission, only to find that there are obstacles to his new lifestyle, such as jealous husbands and treacherous females.

Government agent Jack Sargeant teams up with an international crime-fighting organization to rescue a kidnapped princess.