If you haven't seen the movie, DO NOT click on the "Read more" below. It is a graph that explains the movie in more detail. It's not exactly a spoiler, but it will ruin the overall experience of the film if you have not seen the film. If you have seen the movie, it will give you a clearer picture of what happened. Thank you GFR for the graph.
Click on the graph below to view it in its full size.