Ghajini stars Prashant (Aamir Khan), Kalpana (Asin Thottumkal), Lakshman (Pradeep Rawat) and Chitra (Jiah Khan). Prashant Pawar is a rich businessman running a cellular phone company named Air Voice. Kalpana, an advertisement model falls in love with Prashant, but she has never met Prashant.
The problem starts when Kalpana goes ahead and gives interview to a popular magazine saying she is in love with Prashant. This does not make Prashant happy and he in rage wants to settle his scores with her. On the way he catches a fleeting glimpse of beautiful woman (who happened to be Kalpana) helping handicapped children to cross a street. He is touched and offers to help. Prashant instantly falls in love with Kalpana. Later when he meets Kalpana, the same girl he met in the street, he hides the truth and introduces himself as Manohar. Eventually Kalpana falls in love with Manohar aka Prashant.
Once in a local train, Kalpana saves some young girls from gangster Lakshman and his group. To avenge the embarrassment, Lakshman visits Kalpana’s house. Incidentally, Prashant arrives at the scene and fights off the goons, but during the ensuing fight, Kalpana is murdered. Irony, Kalpana never comes to know who Prashant was, the guy she loved before.
During the fight with Lakshman Prashant is hit on his head and suffers from short-term amnesia. At any given time, he does not remember anything that happened more than 15 minutes back, although he frequently has flashbacks of Kalpana’s murder.
The story might sound similar or nothing too special, it will be the execution and Aamir Khan to watch out for.