Ra.One is a 2011 Indian Hindi-language superhero film directed by Anubhav Sinha, who co-wrote the screenplay and dialogues with Kanika Dhillon, Mushtaq Shiekh, David Benullo and Niranjan Iyengar. The film stars Shah Rukh Khan in a dual role and Arjun Rampal as the titular antagonist, with Kareena Kapoor, Armaan Verma, Shahana Goswami, Tom Wu, Dalip Tahil and Satish Shah in supporting roles. The story revolves around Ra. One, a video game antagonist, who escapes from the virtual world and arrives at the real world to hunt down Lucifer, which is the ID of Ra. One's creator Shekhar Subramaniam's son Prateek as he had defeated Ra. One in a game. Shekhar gets killed by Ra. One, but Prateek resurrects G. One, the video game protagonist who is a lookalike of his father, to defeat Ra. One and protect him and his family.
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