By the film’s climax, the audience realizes that Leonard’s "truth" is a construct designed to give his life meaning.

The two sequences "index" together and meet at the film's climax, which is chronologically the middle of the story. 2. Plot Summary The film follows Leonard Shelby, a man suffering from anterograde amnesia , which prevents him from forming new memories.

As seen in the film, these scenes play in reverse order, starting with the murder and ending with the transition from black-and-white.