Plot
Sarika is a single woman who lives alone in Mumbai and works at a travel agency. She meets Karan and initially resists his romantic advances, but the two eventually begin a relationship and move in together. One day, Karan asks Sarika to host one of his friends for a few hours when he won't be home, and she agrees. Karan's friend arrives at Sarika's home, drops off a suitcase, and leaves. That evening, Sarika sees on the news that the man is a wanted criminal. Sarika is shocked and calls Karan, who tells her to get rid of the suitcase. Sarika steps out with the suitcase and is intercepted by police officers who arrest her. Karan asks her to speak to his lawyer, Kamlesh Mathur, and not to mention his name anywhere in this investigation. The attorney advises her to confess to the crime, convincing her that since she has no criminal record and no prior convictions, the judge will release her.
Sarika complies after being convinced that the judge will give her a light sentence. However, the judge sentences her to seven years in prison without parole. Sarika then realises that Karan and his attorney have cheated her. Karan is a criminal who framed her to keep police away from him. Soon after this realisation, Sarika's father dies. In prison, Sarika's hatred for Karan grows. Pramila, an inmate who has contacts outside prison, decides to help Sarika.
Sarika begins a journey of self-transformation, which she starts by conquering her fear of rats. She beats up an abusive inmate, Gomati, who had bullied her. Sarika then escapes from prison, along with a few inmates. Karan is notified of her escape by Kamlesh Mathur but does not think much of it. ACP Malti Vaidya sets out to find Sarika. Sarika finds Mathur and kills him after learning Karan's whereabouts, working for a gangster in Delhi.
Sarika finds Karan in Delhi with his new girlfriend. She takes a room right opposite Karan's so that she can observe him. She trails him day and night, without arousing suspicion. ACP Malti Vaidya finds Sarika when Sarika calls her mother from a prepaid phone in Delhi. Karan, in the meantime, is in trouble with a local gangster, Sanjeev, to whom he owes money. He is kidnapped from a nightclub by Sanjeev's henchmen, who threaten him. Sarika secretly observes the incident. As soon as Karan leaves the room, Sanjeev is found dead, and suspicion falls on Karan.
Karan and his girlfriend are attacked in the hotel, leaving his girlfriend and a few henchmen dead. Karan escapes as ACP Malti reaches his hotel suite in pursuit of Sarika. Karan is bewildered at Sanjeev's death and the attack and wonders if a rival gang murdered Sanjeev.
Meanwhile, Sarika pretends to meet Karan accidentally. She pretends to have sympathy for him, and Karan believes her. Karan confronts a man whom he suspects to be a traitor, but the man can say anything; Karan kills him.
Sarika is amused at Karan's confusion. She steals money from Karan's boss, for which Karan is suspected. Realizing she has framed him, Karan confronts and assaults Sarik, who tells him she has burned the money. Karan takes Sarika to his boss and makes her confess at gunpoint. But she feigns ignorance and claims that Karan forced her to confess. A fight begins between Karan and his boss's henchman as the ACP enters with the police.
In a shootout, the ACP kills Karan's boss, and the ACP herself is shot. Karan briefly escapes before Sarika catches him, holds him at gunpoint, and makes him drive to a secluded spot. After knocking Karan unconscious, Sarika chains him in a cavern infested with rats. As Karan regains consciousness, Sarika tells him how she used to be scared of rats, and she chose this spot because she wanted him to go through the pain and suffering that she went through while she was in prison. Sarika leaves Karan in the cavern.
Karan screams, but no one hears him. A pack of rats attacks and kills him. Sarika surrenders to the police, turning in the bag of money that she stole from Karan's boss to the ACP.
