A steel samurai blade that was to be given to the American ambassador by the Emperor of Japan is stolen. American sailors and Japanese samurai are sent to find it.

Scientists investigating the briny deep are threatened by a giant turtle and the spirit of a young brunette swimmer in the Bermuda Triangle.

Wealthy big game hunter (Boone), along with his group, gets trapped in pre-historic times where they are stalked by a ferocious dinosaur.