Takeshi Ijuin leaves for Chicago to be a cameraman, and a few years later returns to Japan. But he only learned the technique of homicide in Chicago. When he visits the graveyard with his father to pray at his mother's tomb, his father is shot by someone. Now he thirsts for revenge.

Zero Mostel plays an inspector on the trail of criminals who have captured a robot called Chatze(sp?) played by Felix Silas. The inspector has delusions that he is a great Samurai warrior and the movie flashes back and forth between present day and ancient times.