Los Angeles 2050 A.D. Crime. Drugs. Violence. Rape. The City of Angels has descended into chaos. Street fighter Dominic La Banca seeks to avenge his brother's death in this lawless city. To find the killer, he must enter the deadly underworld of the Alley Fights a savage kickboxing match of the future!

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".

Johnny Woo is a Chinese doctor who has given up fighting in the ring. His brother is a teacher at a kickboxing club. When Johnny falls in love with Julie, whose brother is a teacher in a rival kickboxing club, tension begins to build...