Three robbers escape with loot from a heist before one of them shoots the others. Their corpses wash up near the aftermath of a maritime calamity, provoking a policeman’s interest.

Twelve Japanese seamen are stranded on an abandoned and forgotten island called Anatahan for seven tense years of internal strife.

While covering a test of guided torpedoes, two reporters believe they see what appears to be a strange-looking swimming creature. They investigate the matter further and discover that there is…