After studying martial arts in the Philippines and defeating his opponent Quino, Anthony Scott heads back to the U.S. to attend college. Making the promise to his teacher that he will not fight, Anthony finds himself the target of the Tigers, a local martial arts gang led by bully Dick. When Dick constantly attempts to fight Anthony, Anthony refuses. However, Anthony will fight under the condition that it will be a fair fight. When Dick resorts to dirty tactics, Anthony uses his special move, The Dragon Strike, to defeat Dick. Upset at his loss, Dick decides to get even through the Tigers' real leader, Mark Sanders.

Commander and his small band of freedom fighters make life difficult for the VC after the Vietnam War is over. They free Vietnamese prisoners, and destroy enemy convoys every chance they can get. This severely upsets the evil Russian Vlasov, who is working with the VC in various nefarious enterprises. An ultra-violent, Rambo style movie filmed in the Philippines.

Anthony is in the Phillipines visiting his father. He inadvertently interferes with the affairs of local gangster Quino, who also happens to be a champion Karate fighter. After embarrassing Quino near a local tournament, Anthony is beaten up and left for dead. An old monk nurses Anthony back to health and teaches him the ways of martial arts so he may go back and fight Quino again.

Steve is a Ninja. He's been called in by the police to help them in their investigations. He's to work with Kevin, a police lieutentant. They are investigating the break-in at the Federal Research Institute, where despite heavy security, 7 Ninja warriors manage to steal a vital document. Well pleased with their night's work, they return to their master, Kurodo, who finds they only have a half of the information they need. The police capatain wants results. Kevin suspects that a Japanese Garden he visited once with Steve could be the headquarters of Kurodo and his Ninja's and goes in search of proof. He's caught spying and is tortured and killed. After the disappearance of Kevin, Steve opens his Ninja box. He breaks the seal of his Katana and starts the Mantra. He attacks the Japanese Garden, eliminates the Ninja warriors and after recovering the documents and blowing up the laboratory, finally meets Kurodo, there can only be one victor...

A boy sees his parents gunned by criminals due to unpaid debts. Twenty years later, the boy, Mark Quinn, has become a hard-hitting cop, the kind that hates criminal scum, bending the rules to catch those criminals and drive them to despair.

After a dangerous top-secret formula is stolen, a government agent traces the thieves back to a mysterious island and a secret-society of Ninjas.

Japanese soldiers battle a tribe of cannibals while protecting a gold shipment.