Yoshikazu Kawamata
In an effort to find an economic means of purifying salt water, a joint U.S.-Japanese military command is set up on an isolated Japanese island where an unusual salt water lake is situated. However, their purifying experiments arouse the prehistoric monster Obaki from hibernation at the lake's bottom, and it proceeds to attack Japan.
When a rare species of butterfly is found in a mysterious valley in Japan, a pair of entomologists go to investigate and find more. However, when they get there they find an uncharted lake and as they are observing it they are caught in a landslide and killed. A reporter named Yuriko, the sister of one of the men decides to go to the area to find out what exactly happened. She is accompanied by another entomologist named Kenji and a reporter named Horiguchi. When they get to the village where the men were last seen alive they find out about a legend regarding a giant monster. They soon find out that it is not a legend and the monster named Varan is very much alive. Soon Varan leaves the valley where he has lived for millions of years and is heading for Tokyo.
A samurai answers a village's request for protection after he falls on hard times. The town needs protection from bandits, so the samurai gathers six others to help him teach the people how to defend themselves, and the villagers provide the soldiers with food. A giant battle occurs when 40 bandits attack the village.
