A Japanese cop, Shiro, and his partner Ray are after a bunch of drug dealers. But they are betrayed by an insider and Ray is killed. Shiro follows the murderer, a sadistic drug lord, up to Singapore.

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….

After completing his training of ninjutsu within Japan, an American Vietnam veteran by the name of Cole (Franco Nero) visits his war buddy Frank Landers (Alex Courtney) and his newly wed wife Mary Ann Landers (Susan George), who are the owners of a large piece of farming land in the Philippines. Cole soon finds that the Landers are being repeatedly harassed by a CEO named Charles Venarius.