Plot
Sonia Raina is a spirited teenager living with her mother, Mallika, and grandmother, Jaya, following her parents' divorce when she was 10. Shortly before her 18th birthday, Sonia has a heated argument with her mother about curfews after a Christmas party and asks about her father. In frustration, she swims far out to sea, where she is abducted by a man who chloroforms her and takes her to a secluded cottage with no exit.
The next morning, Sonia’s mother receives a call from the abductor, who reveals he wants to speak only to Sonia’s estranged father, Vikrant Raina, a ruthless, New York-based billionaire worth $51.7 billion. He returns to India because he believes someone has emptied a large share of his money and reunites with Mallika, who informs him about the abduction of Sonia and the abductor’s demand. The kidnapper reveals that Vikrant's money is safe in his account but insists he complete a series of dangerous tasks to learn the motive behind the kidnapping and secure Sonia's release.
The first task involves apologizing to Sister Margaret, a woman from Vikrant’s past, whom he must locate on a train. With the help of detective Irfan, Vikrant uncovers a poem given by the woman. Meanwhile, Sonia, initially defiant, becomes conflicted as she discovers her captor is not inherently cruel. Despite attempting to escape by injuring him, she later realizes his anger stems from years of pent-up frustration.
Sonia learns the abductor is Kabir Sharma, who has a personal vendetta against Vikrant, and the bungalow she is living in was once owned by Vikrant. Years earlier, Vikrant falsely accused Kabir of kidnapping Sonia after a car accident involving Sonia and Kabir. In reality, Kabir had stolen a car in desperation to save his injured friend. Vikrant’s influence sent Kabir to prison, where he endured 15 years of abuse and humiliation, fostering a desire for revenge. Kabir’s intent was to teach Vikrant a lesson, not harm Sonia, though Sonia begins to empathize with him as she uncovers the truth.
Meanwhile, based on the clues he already has, Vikrant figures out that his daughter's kidnapper is actually Kabir, who he realizes he had wrongly framed for "intentionally" hurting Sonia. Meanwhile, unable to reach Vikrant over the phone, Kabir decides to pay him a visit. As planned, Vikrant and Irfan intercept him and a chase ensues. Eventually, Kabir leads Vikrant to Sonia. After meeting Sonia briefly, Vikrant is told to dismiss Irfan from the case and he hands Vikrant the task to free a prisoner from jail. Vikrant follows the command and succeeds in saving the prisoner who, it turns out, is Kabir's friend who he wanted to save, but shortly after the assignment, Irfan intervenes and shoots Kabir, who has already bidden farewell to his friend. Angered, Vikrant threatens Irfan to stay away from now on.
Injured but alive, Kabir escapes and returns to the bungalow, where Sonia nurses him back to health. Despite having an opportunity to escape, Sonia has a fit of Stockholm Syndrome as she feels he has been gravely wounded. Based on the clue Vikrant receives after freeing the prisoner from jail, he figures out Sonia's location. On reaching his old bungalow, he does not find Sonia or Kabir but instead discovers the next clue that requires Vikrant to murder someone at a New Year's Eve party. After much deliberation Vikrant commits the murder and realizes that he murdered Kabir. However, Kabir himself reveals to be alive and confronts Vikrant, forcing him to realize that Vikrant is a criminal himself even though he committed the crimes to rescue Sonia and question whether Kabir was a criminal who deserved imprisonment or a teenager who was unduly penalized for an innocent mistake. Moved by this reckoning, Vikrant apologizes to Kabir, who then vanishes, leaving behind a clue that leads Vikrant to Sonia. The family is eventually reunited.
At a family gathering, Kabir reappears to apologize to Sonia for the ordeal he caused. He reveals that he has started anew, working at a software company. Sonia and Kabir part ways amicably, wishing each other well.
