After an American Navy base is annihilated by a secret weapon, Agent OSS 117 is sent to Japan to investigate the organization that's claiming responsibility, and threatening the US with another attack, if they don't pay.
The story (based on a novel by James Hadley Chase) concerns the efforts of the genial and deceptively tentative Lepski (Michael Brandon), an insurance company detective, to track down a valuable medieval Russian icon, which was stolen by Bradley (David Carradine), a master thief.
