Luke Powers travels to L.A. to find that his brother has been murdered in a back alley martial arts tournament. Luke enters the tournament circuit to try to flush out his brother's killer. With the help of a trainer and former fighter, Lucke enters what he thinks will be a victorious battle.

A lawyer's family is murdered by drug smugglers, and he is beaten and left for dead, but survives although in a coma. When he awakes he only has a partial memory of what happened. In order to find out the real story, he trains with a karate master and becomes a mysterious avenger known as "The Karate Man".

A Chicago cop is caught in the middle of a gang war while his own comrades shun him because he wants to take an irresponsible cop down.

1976 film