Specialists gather in a centre to investigate a series of strange deaths. One of the boffins of the team examines evidence to uncover a potential justification that is parasitic for the fatalities. But if a detective sends her crazed writings of a mysterious man, the scientist learns that the actual threat may be far older -- and more dangerous -- than anybody ever imagined. Can she convince her colleagues of the legitimate danger before an force rises from the ocean to attract madness and death?