Ra.One is a 2011 Indian science fiction superhero film directed by Anubhav Sinha, and starring Shah Rukh Khan, Arjun Rampal, Kareena Kapoor, Satish Shah. The film follows Shekhar Subramanium (Khan), a game designer who creates a motion sensor-based game in which the antagonist (Ra.One) is more powerful than the protagonist (G.One). The former escapes from the game's virtual world and enters the real world; his aim is to kill Lucifer, the game ID of Shekhar's son and the only player to have challenged Ra.One's power. Filmed in India and the UK.