After the Mantis Fist school attacks the Eagle's Claw school and leaves their teacher for dead, the dying master passes over his senior student, Chen Tien Chun, to anoint his second most senior pupil, Lee Cheh, as new master. Dejected, Chen joins the Mantis Fist school and wins the affection of his new master's daughter, while his former schoolmates plot revenge.

A serial killer is loose in Hong Kong, murdering hostesses from high class night clubs. As punishment for their flaky style and lack of discipline, two young policewomen are assigned to work undercover as hostesses to catch the sadist. While solving that crime, they discover who's behind some of the city's drug trade. In trying to halt this enterprise, which they undertake without orders, they must face the crime lord's Japanese hit woman.

A group of police women keep the city safe. A normal day day includes everything from battling robbers to going undercover to break up a arms deal that threatens the city.

After Japanese warriors execute the Chinese Jingwu kung fu school's headmaster, Chen Zhen, and raid a number of schools in an effort to weed out Jingwu rebels, Zhen's brother, Chen Shen, vows revenge.

When South China martial artist Pan is defeated and killed by North China challenger Tan in a legfighter duel, Pan's younger brother Pak vows to crush Tan with his own unique style of ferocious footwork.