On a stormy night in Bangalore, a violent gust tears through an apartment when a large tree branch crashes into the roof. A woman who is inspecting the outhouse is rushed to the hospital after the collapse, setting off a chain of urgent, overlapping concerns that pull two families toward a chilling secret.
Back in a different town, Sanjana and her husband Kabir quarrel about missing a birthday celebration together, a dispute that underscores their strained distance. The moment Sanjana receives news of her mother’s accident, their plans collapse and they rush to Bangalore, where fear and fate begin to intertwine in unsettling ways.
In the city, Sanjana starts to experience disturbing visions that hint at trouble from beyond the grave. She becomes convinced that the soul of her dead conjoined twin is haunting her, a notion her skeptical husband dismisses. Hoping to help, Kabir arranges for her to see a former professor who specializes in spiritual healing.
During the sessions, Sanjana unfolds a painful history: her conjoined twin sister Anjana harbored resentment because Kabir seemed closer to Sanjana. The pivotal moment arrives when Kabir told Sanjana he was returning from abroad, a revelation that spurred Sanjana to pursue a separation from Anjana. The surgical separation led to Anjana’s death, and Sanjana carries guilt for what happened. The professor reassures her that her visions stem from inner guilt and are not supernatural manifestations, a perspective that winds its way into the deeper dread that unfolds.
At her mother’s house that night, an unseen force drags Sanjana into the outhouse, where she is found unconscious by Kabir. When she awakens, the presence of Anjana takes hold, and Sanjana becomes a vessel for her sister’s spirit. Anjana’s influence intensifies, especially around Kabir, and the professor grows uneasy, urging Kabir to monitor Sanjana closely.
A caretaker suggests performing a ritual to help Sanjana regain control, but the ritual only strengthens Anjana’s grip. The situation escalates until an exorcist is brought in to confront the escalating possession. In a startling revelation during the confrontation, Anjana discloses that she was murdered, a truth that destabilizes the fragile balance Sanjana had been clinging to. As Sanjana’s body is freed of Anjana, she pleads with Kabir to uncover the truth behind her sister’s death.
In the wake of these revelations, Sanjana reveals another unsettling truth: years ago, when Kabir said he was coming home, Anjana’s jealousy prompted a violent response, and Sanjana acted in self-defense by striking Anjana with a glass music box, unintentionally killing her. Their mother concealed the incident to protect her daughters, a secret that now threatens to destroy the remaining bonds between Sanjana and Kabir. Following counsel from the professor, the pair resolve to locate and burn Anjana’s last possession to liberate her soul.
Together with the caretaker and Kabir’s daughter-in-law, the trio tracks the haunting music to the outhouse, where a hidden floor conceals Anjana’s corpse. In a grim sequence, the caretaker and the daughter-in-law descend to fetch kerosene to burn the body, only to fall to Anjana’s malevolent power. The professor arrives with kerosene but becomes possessed, turning the battle toward Sanjana. While Kabir fights the possessed mentor, he discovers a locket he had given Sanjana long ago on Anjana’s corpse, a painful reminder of the complicity and confusion that bind the sisters.
Confronting Sanjana, Kabir learns the devastating truth: Sanjana is, in fact, Anjana, who had swapped identities to win Kabir’s love. She confesses that she killed Sanjana with the music box and assumed her sister’s place to be with him. Kabir, overwhelmed and outraged, resolves to leave, a decision Sanjana tries to avert with pleas of love. In a final twist, Sanjana’s true identity is revealed, and her plea to keep him dissolves as she strikes him with a chair to stop his departure. Anjana’s attempt to kill Kabir with a pair of scissors is thwarted by Sanjana’s soul, and the roof above them collapses in a fiery inferno that consumes Anjana and the possessed professor. Kabir, badly shaken, watches as Sanjana’s soul appears to smile at him before it vanishes into the flames, signaling an ending that is both haunting and heartbreakingly unresolved.
