Yes and No. The premise/plot is rather simple... a quick wiki read will explain the plot. You'll also find, the plot is based on ( in my opinion ) Plato's Allegory of the Cave, if you're into the whole "Greek philosopher thing, man..."I haven't seen the movie.
Was he living in isolation on an island?
ya.... see? It really did say it all, but perspectives will differ, depending on the individual point of view... as pointed out by the fact that he is walking INTO darkness beyond the doorway, not the sunlight of the real world, that is... into the unknown. Faced with the choice, I'm always going for the unknown. Because: therein lies a question to ask, and maybe an answer.Perfect.
I love that movie.