Li, a martial artist, returns home to find out that his father is being harassed by a crime syndicate. Together with an American kung fu champion he vows revenge when the syndicate kills his father.

A dying Manchu kung fu fighter sends his three sons on a mission of revenge against the five Southern champs who defeated and humiliated him a generation ago. The three Manchus enter the town where the old champs live and begin challenging and fighting an unprepared group of once-powerful martial artists and their sons. After his counterparts in the other families take some serious beatings, Billy is forced to take a crash course from a noted teacher in North and South Eagle styles as well as Horsehead Fist. Only then is he able to confront each of the three Manchu fighters.

Sung Shao Chong (Billy Chong) traverses the Arizona desert, helping those in need on the way to meet his old friend Kum (Lam Hak-Ming) in a small western town. Once there, he runs into a group of men who terrorize the town and extort the local businesses. Meanwhile, a trio of three bank robbers need a place to hide until the heat dies down from a recent heist. They pick the home of a black farming family and subsequently kill them, leaving only the severly injured eldest son Tommy (Carl Scott) to escape. Tommy is found by Chong and Kum and is brought to the home of Doctor Ko (Leung Siu-Chung), who heals his injuries. Eventually Tommy learns kung fu from Ko, and sets out for payback. Luckily for Tommy, Chong is also bent on revenge after the bandits hire the local troublemakers and some Japanese samurai to kill him.

A young man vows revenge against the killers of his father. To do this, he must train with his father's teacher who teaches him the "Shadow Claw", a deadly combination of the eagle claw and shadow fist.

Humans use martial arts to battle ferocious zombies.