Based in the book 'Cold Skin' by Albert Sanchez Piñol. In the years after World War I, an old irish partisan decided to get a job in a lonely island. There is only one person living there, Battis Caffó. He lives in a lighthouse and at the first time he didn't help him.

After an horrible night, in which he is attacked by stranger creatures, he gets to go into the Caffo's lifehouse. Soon he will discover that Caffó have one of that stranger creatures like servant: Aneris.