Sunita, a medical student, is investigating the anterograde amnesia case of Sanjay Singhania, the chairman of Air Voice, a telecommunications company. She does so against her professor Dr. Debkumar Mitra's wishes, in s… See more

• Aamir Khan as Sanjay Singhania / Sachin Chauhan, a rich businessman; the chairman of a telecommunications company, Air Voice; who later suffers from short-term memory loss after a tragic incident ca… See more

It was rumoured earlier that the film was titled Kajri. It is a remake of the Tamil film, Ghajini (2005). Aamir Khan, who had never before worked in a remake film in his career, was initially hesitant to do the film, but was co… See more