A skilled thief, the absolute best in the dangerous art of extraction, stealing valuable secrets from deep within the subconscious during the dream state, is given a chance at redemption if he can successfully perform an inception.In Inception, Nolan wanted to explore the idea of people sharing a dream space... That gives you the ability to access somebody's unconscious mind. What would that be used and abused for? The majority of the film's plot takes place in these interconnected dream worlds.