Inception

Inception is a 2010 science fiction heist thriller film written, produced, and directed by Christopher Nolan. The film stars a large ensemble cast that includes Leonardo DiCaprio, Ellen Page, Joseph GordonLevitt, Marion Cotillard, Ken Watanabe, Tom Hardy, Dileep Rao, Cillian Murphy, Tom Berenger, and Michael Caine. DiCaprio plays a professional thief who commits corporate espionage by infiltrating the subconscious of his targets. He is offered a chance to have his criminal history erased as payment for a task considered to be impossible inception, the implantation of another persons idea into a targets subconscious.

Dominick Dom Cobb Leonardo DiCaprio and Arthur Joseph GordonLevitt are extractors, who perform corporate espionage using an experimental military technology to infiltrate the subconscious of their targets and extract information while experiencing shared dreaming. Their latest target is Japanese businessman Saito Ken Watanabe. The extraction from Saito fails because of the memory of Cobbs wife Mal Marion Cotillard. Saito reveals that he was actually auditioning the team to perform the difficult act of inception planting an idea in a persons subconscious.To break up the energy conglomerate of ailing competitor Maurice Fischer Pete Postlethwaite, Saito wants Cobb to cause Fischers son and heir, Robert Cillian Murphy, to dissolve his fathers company. In return, Saito promises to use his influence to clear Cobb of a murder charge, allowing Cobb to return home to his children. Cobb accepts the offer and assembles his team Eames Tom Hardy, a conman and identity forger Yusuf Dileep Rao, a chemist who concocts a powerful sedative for a stable dream within a dream strategy Ariadne Ellen Page, an architecture student tasked with designing the labyrinth of the dream landscapes, recruited with the help of Cobbs fatherinlaw, Professor Stephen Miles Michael Caine. Saito accompanies the team to verify their success. When Ariadne shares a dream with Cobb, she learns that his subconscious recreates Mal, frequently as a hostile force. ........

Source: Wikipedia