The Sci-Fi in this movie is just a background. This is a philosophic movie with a bit of drama. A tragedy of one man, which, in reality,reveals a tragedy of the whole humanity. The main hero accepts his destiny and, in the end, do not see is as a tragic, but as something more.
The main motive of the movie - tell the universe, that you ARE, you exist. Feel as a part of a bigger picture. Only few people in the movie are capable of it. Just like in the real life. Where the money and emptiness rule.
Great movie and a decent memento for two actors that were killed in a catastrophe before the movie was released.