Diamants et karaté (1978)

A band of counterfeiters wants to make Hong Kong their new territory. The disgraced leader of the Special Squad will have to team-up with a group of Hong Kong police officers in an attempt to stop the dirty business of crime lord Han Tin Lung, but Han's problem is not only the interference of the Police force, but his Japanese ally Kimura is not happy with his 'cut' in the counterfeit deal and will try to put Donna (a relative of Han) on his side to make Han's business his own property. Both policemen and criminals are highly trained Martial Arts fighters and they will have the chance to prove who has the best Kung Fu techniques.