Cobb, a skilled thief who commits corporate espionage by infiltrating the subconscious of his targets is offered a chance to regain his old life as payment for a task considered to be impossible: "inception", the implantation of another person's idea into a target's subconscious.
Oscar Diggs, a small-time circus illusionist and con-artist, is whisked from Kansas to the Land of Oz where the inhabitants assume he's the great wizard of prophecy, there to save Oz from the clutches of evil.
Blonde Betty Elms has only just arrived in Hollywood to become a movie star when she meets an enigmatic brunette with amnesia. Meanwhile, as the two set off to solve the second woman's identity, filmmaker Adam Kesher runs into ominous trouble while casting his latest project.