Cthulhu is the frightening story of a monster that lives in the sea. Deep off the coast of Japan, a disturbance is swelling. The legendary monster has been awakened by a mysterious event. When the townspeople begin hearing stories of a large monster that has swallowed entire crews, they are hesitant to believe them. When the town major ventures on a boat to examine the waters with a crew of his own, he witnesses first hand the giant tentacles of Cthulhu as they rise up from the storming waters. However, by the time he warns the people of the coastal towns, Cthulhu has swam closer.