The worker isn't and once he talks about his past with the accident incident it starts to torment him even more on top of the isolation. The keeper is used to isolation, he can live with it. Young guy gets more and more fed up with the superstition and need for authority while the keeper wants someone to talk to. Their fuses become short, young guy starts drinking, they're getting on each others nerves while simultaneously being the only company they have. They're both dudes on an island so they jerk off (old man to the light which he got attached to, young guy to his mermaid figure, has fantasies about meeting it irl etc). There's the physical plot: The old man scamming young dudes into doing the dirty work for him (possibly killed one in the past who also went insane), the boat either doesn't come or they miss it (maybe intentionally by the old guy to keep his worker from quitting) and the fight for the light in the end.

I think if this movie would need a genre it would be Psychology.

What i got sublime mp3