Akira Saito, a Japanese businessman lives in Tokyo with his Japanese-American wife Aiko and their children, Takeshi and Tomoya. When the family has a chance to move to the United States so that Aiko can teach the children about their American heritage, they pack up and head for Houston, Texas and run a restaurant. This is where the trouble begins....

One of the US Air Force's most modern tactical aircrafts, an F-100 with a new laser guidance system, crashes into the sea near Malta - a region where the Soviet forces are highly present, too. The CIA immediately sends out their best secret agent, Ken Tani, to salvage the system before it falls into enemy hands. To ensure his loyalty, they bring his two young sons to a nearby hotel on the island.

A trio of specialized soldiers is called in to stop a group of drug traffickers who have hijacked a busload of tourists in the Philippines and threaten to kill them all if one of their companions is not released from jail and the government does not stop its anti-drug policies.

Nathan Algren is an American hired to instruct the Japanese army in the ways of modern warfare, which finds him learning to respect the samurai and the honorable principles that rule them. Pressed to destroy the samurai's way of life in the name of modernization and open trade, Algren decides to become an ultimate warrior himself and to fight for their right to exist.

The year is 1578. It is a time of strife and civil wars. During violent struggles for power, there were special soldiers who stood beside samurais. They sacrificed themselves in the line of duty, always at the service of their samurai masters. They operated incognito, wearing camouflage at all times. These spies were called "SHINOBI". They had once been united, but were now divided into countless antagonistic factions. Jin's group is targeted by another group... Riku is Jin's subordinate and the new leader of his group.

British RAF Wing Commander James Wright is captured by the Japanese during WWII and forced to fight in brutal hand-to-hand combat. The Japanese soldiers get more than they bargained for when Wright’s years of martial arts training in Hong Kong prove him to be a formidable opponent.