A wife drags her husband on a dangerous cross-continental journey to find the truth about her father's death.

Billy is a young fighter whose sister Judith was hurt after a near gang rape. When he learns she must have surgery, crime boss Russell has Billy compete in illegal street fights. When Billy learns he may get killed, he quits but is later killed by Russell and his men, who were the ones responsible for Judith's accident. After his death, Billy must rely on one man to seek revenge for him: his best friend David. However, David must train in the martial arts before he can seek revenge. Davidy seeks guidance from the ghost of Billy as well as Billy's trainer and ally, Murphy.

Steve, a young kickboxer, returns home to find his parents have been brutalized by a gang of martial artists. When the cops can't find any answers, Steve decides to kickbox his way to savage justice. No thug on the streets is safe!

After suffering a concussion from a grenade blast in Vietnam, Sgt. Frank Johnson has been getting flashes of his childhood in which strangely he is a ninja. Because of this, he is given a codename: "Black Fire" by the US Army. He is sent to San Sebastian together with his buddy Sgt. Jim Anderson to work as U.S. military advisers. One night, Sgt. Johnson discovers Capt. Salcedo of the local corrupt army is trying to transport arms.