This high-powered action flick follows kickboxing champion Johnny Rider, who quits the ring after accidentally killing an opponent but is forced to employ his skills again to avenge the death of his brother at the hands of crime boss Rod Sparks (Nicholas Hill). After infiltrating Rod's gang, Johnny is targeted himself by Bill Williams (Ron Hall), a cop seeking revenge for the death of his own brother -- the fighter killed by Johnny.

During a daring mission in Vietnam, a helicoptor squadron is downed. While the soldiers try to escape capture by the Viet Cong, clues that the copter was sabotaged lead to brutal infighting, as they search for the traitor among them.