Avinash “Avi” Mehra is a renowned photographer who shares a live-in relationship with Sonia, a model. One night, after leaving a party, their speeding car hits a young girl, and in a moment of panic, Avi urges Sonia to drive away, hoping to avoid getting into trouble. What starts as a desperate escape soon spirals into something far more disturbing: strange white marks begin to appear in Avi’s photographs, and Sonia begins experiencing unsettling, ghostly phenomena. At the same time, Avi endures a mysterious and painful neck ailment, and a surprising fact surfaces—he weighs 120 kilograms (264.6 pounds) despite not appearing overweight. As the hauntings intensify, Avi and Sonia find themselves besieged by the same spectral force that seems to be targeting Avi, and they realize that this presence is somehow connected to Avi’s past.
The couple learns that Avi was close friends with a girl named Aarti Kaushik during college, a fact that deepens the eerie atmosphere surrounding their experiences. Their fear grows when Avi and Sonia decide to confront Aarti’s memory, only to discover that Aarti is believed to be dead, having apparently taken her own life with a knife. Aarti’s mother maintains that her daughter is still alive, thinking she is ill and will recover. On their return journey, the haunting persists; late at night in a hotel, Avi is tormented by visions of Aarti, and at one point she even appears to strike him in his sleep, throwing him from a fire escape.
Hospitalized later, Avi faces a harsh truth: Aarti is to be cremated. As Avi and Sonia attend Aarti’s funeral, Sonia uncovers photographs of Aarti crawling and reaching toward something unseen. Following the unsettling trail that Aarti leaves behind, Sonia discovers a devastating secret: Avi’s closest friends, who later took their own lives, raped Aarti. When Sonia confronts Avi with this revelation, he explains that he had hoped to help Aarti understand his emotions, but when his friends attempted to speak with her, Aarti pushed back, briefly injuring Tarun, who, along with another friend, retaliated by assaulting her. Avi insists that he walked in after the act and was shocked, trying to intervene, but Tarun accused him of orchestrating the rape and suggested Avi had arranged it to avoid jail; the photographs, Avi reveals, were taken by one of his friends. He keeps the images as a painful reminder of his failure to protect Aarti, blaming himself as the guilty party.
Sonia leaves Avi, unable to forgive him, and Avi’s torment deepens. He later attempts to end his life in a manner similar to his friends, only to be interrupted by a Polaroid flash that seems to conjure Aarti. In a chilling moment, Avi is propelled through a window and ends up in the hospital. The doctors reveal that the reason Aarti seemed to sit on Avi’s shoulders is that she still loved him. As Sonia takes another photograph of Avi, she speaks to Aarti, telling her that one day she will find a way to let go, while a reflection in the mirror reveals Aarti still leaning on Avi’s back, suggesting that the past and its weight remain stubbornly with them.
