It is 1940';s China, and gangs rule the city. The story revolves around a hapless wannabe gangster who aspires to become a member of the notorious "Axe Gang". A slum called Pig Sty Alley is the only area safe from the Axes because the people there are so poor. Soon, wannabe gangster Sing and his pal Bone attempt to extort money out of a barber and fail, drawing the real Axe Gang to Pig Sty. But the eccentric landlords turn out to be the greatest kung-fu masters in disguise and soon the two sides are enemies. What will Sing choose? Become a mobster or save the day?