Karate champion Matt Logan is enlisted by the police to train officers in self-defense after narcotics agents are killed by an assailant using the martial arts.

A Japanese policeman in Los Angeles uses an ancient magic sword to battle killers and an extortion ring.

Tony, the new kid at school, befriends gang leader Young, whose top rival is Chan. When Young defeats Chan in battle, two mysterious men offer Tony and Young jobs at a security agency, with one of their new clients being among the city's most notorious drug dealers.

Jake Carver needs to retrieve a microfilm containing information which would cause a Wall Street panic and an economic crisis for Western governments. Also seeking the microfilm is the villainous Adam who plans to sell the microfilm to the highest bidder. Fist fights, explosions, and car chases ensue.

Martial artists in America battle over the possession of three ancient Chinese statues.

The evil criminal leader Kendrick has kidnapped an elderly biochemist who holds the secret to creating a biological superweapon. The only person who can possibly stop Kendrick and his gang is L. A. cop Sam Kettle and martial arts master Jun Kim (uncle of a little girl also kidnapped by Kendrick). Together, they go to war against an army of ninjas to rescue the hostages and bring their kidnappers to justice.

Joe returns to Colorado after many years to help the man who brought him up, Kim. Joes father was killed by a gang looking to find some gold they believe he had found. Joe finds that Kim has also been murdered by them and tries to help his sister and her man to beat the gang and perhaps find the gold.

An L.A. cop investigating the rape and murder of his wife traces the crime to a psycho biker gang that smuggles guns. He teams up with an FBI agent to stop them and catch his wife's killers.

Billy Wong is a New York City cop whose partner is gunned down during a robbery. Billy and his new partner, Danny Garoni, are working security at a fashion show when a wealthy man's daughter, Laura Shapiro, is kidnapped. The Federal authorities suspect that Laura's father is involved with Mr. Ko, a Hong Kong drug kingpin, so the NYC police commissioner sends the two cops to Hong Kong to investigate.

The life of Fumio Demura, the greatest karate master of a generation.