In the labyrinthine lanes of Old Delhi resides Khuddoos (Manoj Bajpayee), a reclusive middle-aged man who spies on his neighbours through hidden cameras. His only companion is Ganeshi (Ranvir Shorey), a friend who checks in on him and manages his daily needs. Khuddoos, a mechanic by profession, immerses himself in the routine of his solitary existence until one day when he is visited by his estranged brother, Shaukat. Shaukat requests an old necklace of their mother for his daughter's wedding.
That night, while finding the necklace, Khuddoos overhears someone in a nearby house engaged in domestic violence. Shocked, Khuddoos tries to use his cameras to find the house but fails. The house belongs to Liakat (Neeraj Kabi) and his wife Saira (Shahana Goswami). Liakat works as a butcher and regularly beats his son, Idris (Om Singh). Idris is a curious boy who runs around exploring the neighbourhood and peeping into other's homes and loves his mother more that anything else
Khuddoos explains the situation to Ganeshi, who advises him to stop meddling in others' business and to focus on his job. Shaukat returns and expresses disgust with Khuddoos' solitary and unhygienic lifestyle. Gradually, Khuddoos becomes fixated on finding Idris but is unable to do so consistently. This affects his sleep and health, eventually causing him to default on his shop's rent, leading to its closure. Meanwhile, Liakat becomes more lenient with Idris, refraining from punishing him and showing a sudden change in attitude, even though Idris remains uncomfortable due to his father's true nature.
One day, Idris catches his father involved in an affair with another woman, he plans to run away with his mother and baby brother. Idris accuses his father of the baby's death and is severely beaten by him. Subsequently, Idris goes to the railway station, attempting to run away, but is found by Liakat and beaten again.Meanwhile, Khuddoos, still unable to find Idris, scours the streets in an attempt to identify his house, but his efforts are futile. He eventually ends up drunk and arrested after neighbors complain, feeling unsafe around him. However, he is bailed out by Ganeshi, who advises him to stop fixating on finding Idris' house and to move on with his life.
That night, Idris suffocates Liakat to death. A shocked Khuddoos, hearing the struggle, breaks the wall to reach Idris' house, only to discover water pipes on the other side. As he dusts off an old photo, it reveals Idris, Liakat, Saira, and the baby. The revelation unfolds that Idris was Khuddoos' younger self, and the traumatic incident led to his estrangement from the family. After many days, when Ganeshi and the neighbors enter the house, they find Khuddoos missing, and Ganeshi learns the truth upon seeing the photo.
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