The film opens with Sushant Dubey preparing for a business trip and arriving at a Mauritius resort with his wife Aparna and their 3-year-old daughter Titli. He sways Aparna into upgrading from a single room to a double, and the couple settles in. After a moment of privacy, they share a moment of intimacy, while the man in the room below is shown creeping about and peering into other rooms. When Titli goes missing in the middle of the night, that same man becomes the prime suspect, though the truth runs deeper than first appears.
As the story unfolds, it becomes clear that Sushant and Aparna are not married to each other. They met on the ferry to Mauritius, and Sushant is trapped in an unhappy marriage while Aparna is divorced. The two of them grow closer and decide to continue their liaison at the resort, choosing to keep their affair hidden. The disappearance of Titli triggers a crisis: Aparna erupts in distress, while Sushant hopes to shield their affair from public scrutiny and from the resort’s attention. Yet their attempts to manage the situation are upended when Aparna calls the police.
Inspector Buddhu takes the case, and the investigation quickly leans on CCTV footage that initially points to the creepy neighbor who checked out of the hotel. The resort’s manager resists the police involvement, and the neighbor is tracked through town with a young girl in his company. When he is brought in, Aparna discovers that the girl is not Titli, and the man reveals that the girl is his own daughter—a revelation that heightens the mystery rather than resolving it.
A sketch artist is brought in to help, and two portraits are produced from the conflicting descriptions of Aparna and Sushant. The drawings diverge dramatically, underscoring the tension and the unreliability of perception. Under intense questioning, Sushant reveals a troubling backstory: Aparna could not bear children, and the strain led to a mental breakdown. Titli, he confesses, may be a hallucination, a figment of Aparna’s imagination. Later, in a moment of candor, Sushant tells Aparna that he cannot sustain the charade any longer and confesses to Buddhu that he and Aparna are not married and that their entire affair was nothing more than a liaison at the resort. He admits he did not actually see Titli’s face.
Back in his room, Sushant confronts Aparna and hints that Titli’s fate may be more complicated than either of them realizes. He speaks of kidnapping Titli at the behest of a friend who is Aparna’s ex-husband, and he threatens Aparna as they flee the resort with heavy luggage. The escape, however, raises questions about how they bypass front desk security and a resort staff already acutely aware of the investigation.
As they run through the forest, Aparna asks for Titli, and Sushant reveals that he did not know or kidnap Titli in the way it had seemed. Aparna counters by suggesting that there was no ordinary three-year-old after all, but that Titli does indeed exist. An old man arrives at the resort asking after his daughter Titli, and Buddhu is perplexed. The man shows a photograph of Titli, which turns out to be Aparna herself. It is revealed that Aparna is a dangerous mental patient who managed to escape from an asylum.
The old man, Titli’s natural father, recounts the circumstances that led to Titli's presence in the asylum, and the film closes on a chilling note as the deranged Titli attacks and kills Sushant with a meat cleaver in the forest.
