The Prohibited Area

Cheng Szu is a hostess in a Hong Kong night-club who spends one evening in the company of 4 crooks masquerading as Indonesian billionaires. When CID crash the party 2 of the men, Ling & Hung, escape while the other pair, Lu & Tan, are captured and imprisoned.

shaw production

It's approaching World War 2 and China is expecting to be invaded by Germany and Japan. Mr Ang is hired by a Chinese group who are after a "secret document." Many other groups want to get their hands on it as well. It's on the top floor of a tower and Ang must fight his way to the top.

The two fighters of the title clash due to a gang boss playing them off against each other. The boss is hoping to steal a million dollars of the country's money, and when the two fighters realise this they combine forces to defeat the gangster, and his accomplice, a man whom they had both formerly respected.

Ma is a grinning and arrogant young man who believes himself invincible, and with fairly good reason. He intervenes to save Captain Kao from robbery, then aids and abets the robbery of an old man, whose daughter Chin he falls instantly in love with. The stolen money was to pay a debt and, because he hasn't the money, the old man is mortally wounded by Sha, the debt collector's assistant. Ma spends the remainder of the film wooing Chin and baiting and fighting the villains, who seem to keep changing allegiances.