Ghajini– Sunita, a scientific student, is investigating the anterograde amnesia case of Sanjay Singhania, the chairman of Air Voice, a telecommunications organisation. She does so against her professor Dr Debkumar Mitra’s desires, despite Sanjay being below crook investigation. Sanjay, who loses his memory every 15 minutes, makes use of a gadget of pictures, notes, and tattoos on his frame to recover his reminiscence and don’t forget his undertaking of avenging the murder of his fiancé Kalpana Shetty, who became killed by way of a criminal kingpin, Ghajini Dharmatma.
Police officer Arjun Yadav, who is investigating a murder that Sanjay committed, knocks Sanjay subconsciously into a scuffle at his condominium and finds two diaries in his drawer. He learns that Sanjay who’s a hit entrepreneur met Kalpana, a suffering version, after he planned on putting in an advertising billboard above her apartment. Whilst his sellers arrive at Kalpana’s shooting website to barter together with her about it, Kalpana’s boss, advertising veteran Satveer Kohli, misinterprets this as a romantic increase and, in a view of repute and fortune, encourages Kalpana to accept the overture. Kalpana additionally comes to a decision to pose as Sanjay’s lady friend. As quickly as Sanjay reveals the false rumour, he plans to meet Kalpana to confront her but fails, as he starts off evolving to like her after seeing her altruistic nature. He poses as Sachin Chauhan, a newcomer version, and lies to Kalpana approximately himself. Quickly, he falls deeper in love with her. At the quit of the first diary, on 31 December, Sanjay, nonetheless playing Sachin, proposes to Kalpana who, bowled over through one of this sudden gesture, asks for the night to suppose over it. He decides that if she might agree, then he could display his true identity to her, but, if no longer, then he could quietly stroll far away from her existence as Sachin.
As Arjun starts off evolved analyzing the second diary, Sanjay attacks him and ties him up. Sunita locates the condominium, unearths Arjun tied up and learns of Sanjay’s murder plot in his absence. She steals his diaries and frees Arjun. Sanjay unexpectedly appears. As she and Arjun escape, Arjun is hit by a bus. Sunita then informs Ghajini approximately the fact that Sanjay is coming to him to kill him. Sanjay unearths out approximately this and goes to attack her at her dormitory, wherein he’s arrested and given a sedative. Ghajini is informed by using the police about Sanjay’s belongings and he poses as Sanjay’s friend. Quickly Sanjay’s personnel and medical doctor arrive and take him home. There, Ghajini and his guys break his photos and cover his tattoos, thus leaving him and not using a memory of the beyond.
After Sanjay gets arrested, Sunita reads the diaries. She reveals out about Kalpana. Within the 2d diary, Kalpana accepts the proposal, but at the situation that she marries best after she purchases three ambassador cars, because of a beyond commitment. One issue results in another and Sanjay makes a decision on telling her the reality about himself later. The diary ends suddenly when Sanjay has to head to distant places for a few days.
After some research, Sunita finally learns Kalpana travelled to Goa, wherein she stumbled across and freed a group of girls from an intercourse trafficking ring racketeered by using Ghajini. Returned to Mumbai, Ghajini confronts Kalpana when she discovers of the woman went missing after which she walks away in disgust. Later that night, a constable calls Kalpana and informs Ghajini is ready to kill her and that his henchmen are hiding internal her house. Kalpana fails to store herself and Sanjay rushes to her domestic after she calls him and finds Kalpana stabbed. Ghajini hits Sanjay in the head with an iron rod which ends up in brain injury, before killing Kalpana with the same rod, in front of him. Feeling responsible for doubting him, Sunita reminds Sanjay of Kalpana’s murder and allows him to sing Ghajini to his neighbourhood location. Sanjay then kills his guys but has a reminiscence loss suit at the same time as searching for Ghajini, who takes gain of the state of affairs and stabs Sanjay with the usage of a rod. As he prepares to kill Sunita the equal way he killed Kalpana, Sanjay recovers his reminiscence, pulls the rod out and throws it at Ghajini’s face in the nick of time and finally kills Ghajini with the iron rod the same way he did to Kalpana.
Six months later, Sanjay returns as the chairman of Air Voice and is volunteering at an orphanage named after Kalpana, assisting every person like she did, and looking to heal. Sunita items him the cement pad with Sanjay and Kalpana’s foot impressions and he feels Kalpana beside him because the screen pans out in a fading sundown.