On the edge of the Antarctic Circle, a ship approaches a desolate island far from all shipping lanes. On board is a young man, on his way to assume the post of weather observer, to live in solitude at the end of the earth. But on shore he finds no trace of the man whom he has been sent to replace, just a deranged castaway who has witnessed a horror he refuses to name. For the next twelve months his entire world will consist of a deserted cabin, trees, rocks, silence and the surrounding sea. Then night begins to fall...