In the film world, sometimes the author just dont know if he has explained all that matters to within the movie or not but that is not how the Nolan thinks. In his opinion he has explained not only anything but everything that defies at this time all sort of human reality. Though the Inception plot is not anything that we have seen this far within the cinematic world but its still believable and that is the real beauty of the Inception plot.
We cannot spoil your movie watching experience by telling you all the Inception plot, but the main things that were there was the character of the Leonardo Di Caprio named up as the Cobb. Well, he can go inside a human mind and read all the secrets that the person has through and through going inside the three layers of the human dream world.
Within the Inception plot, one can easily realize how difficult it would have been for the director of the movie to implement his own written thoughts into a movie form but Nolan did a really great job in this regard. Now within the movie, Cobb is used to plot an idea inside the mind of the rival businessman of the other person in the plot of the movie and that is what incited all happenings within the entire of the movie. The movie in itself is a real mind blowing experience that can actually make you think twice about any thing concerning dreams and then on the reality.