The film follows Shekhar Subramanium (Shah Rukh 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).
Film tersebut mengisahkan tentang Shekhar Subramanium (Khan), seorang perancang permainan yang membuat permainan berbasis sensor gerak di mana peran antagonis-nya (Ra.One) memiliki lebih ketimbang peran protagonis-nya (G.One).