Inception is a 2010 science fiction action film written, co-produced, and directed by Christopher Nolan, and co-produced by Emma Thomas. The film stars Leonardo DiCaprio as a professional thief who steals information by infiltrating the subconscious, and is offered a chance to have his criminal history erased as payment for a task considered to be impossible: inception", the implantation of another person's idea into a target's subconscious.The journey in Inception works by a person going into somebody else's mind and planting an idea into their subconscious. This is done by creating a dream within a dream, with each level becoming increasingly more difficult to control. The idea is that the person who has had the idea implanted will then act on it in their real life, without knowing that they are doing so.In order to plant the idea, the team must first enter the target's subconscious through their dreams. They do this by creating a shared dream, which they all enter using a machine that simulates the target's brainwaves. Once they are in the dream, they must find the target's totem, which is an object that is unique to them and helps them to know that they are in a dream. The totem is used to anchor the dreamer in the dream, so that they do not become lost in it.Once the target's totem has been found, the team must then create the dream within the dream. This is done by using a combination of the target's memories and their own imaginations. The dream must be realistic enough to fool the target, but also contain the idea that the team wants to implant.Once the dream has been created, the team must then find a way to get the target to enter it. This is done by using a device called a kick, which causes the target to wake up from the dream and then fall back into it. The kick must be timed correctly, or else the target will wake up and remember that they were dreaming.Once the target is in the dream, the team must then implant the idea into their subconscious. This is done by having a conversation with the target, and planting the seed of the idea into their mind. The idea must then be grown and nurtured in the target's mind, until it takes root and they act on it in their real life."