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.
Ten years after their Upper Sixth, Bruno, Momo, Leon and Alain meet together in the waiting room of a maternity hospital. The father of the awaited baby is Tomasi, their best friend at that time, who died one month before due to an overdose. They remember their teenage, their laughs, their dreams, their stupid pranks... a description of the French youth in the middle of the seventies.
As part of an intergalactic coalition, a well-meaning space alien volunteers to bring a message of self-actualization and harmony with nature to the one planet rejected by all her peers as incorrigible: Earth.
