Plot
At the start of the movie, a man comes home with a gift for his daughter, which is a Barbie Doll. His son also finds a camera. The husband then pulls out a mini-mummy sarcophagus statue, a miniature resemblance of the one that of King Tut. His wife jokingly tells him that he is taking too much of these. After some time of taking the a Mummy statue out, the electricity goes out in the house. The wife lights up candles in the house, while the son is recording with the camera. The daughter then asks for a bedtime story. When the dad tries to tell an Indian story of an elephant leg caught in a crocodile's mouth, the second son requests a horror story. The father agrees, ignoring his wife's protests. He tells a story of when he was in 11th or 12th grade, he was playing basketball when one of the players had a stroke. Within a few days, he passes away. Some people say that his spirit goes to the basketball court and bounces a basketball. The second son then tells the father that people said he pushed the player down, causing him to get the stroke. The father gets worried at this comment, makes the first son stop recording puts away the camera, and tells the kids to go to bed. After a few hours, a singing toy mysteriously turns on. The father wakes up to turn it off. When he goes downstairs, he hears the sound of a basketball being bounced. When he takes a flashlight and looks in the mirror, he sees the image of the player he pushed in the reflection but sees nobody in person. After that, the player then hits the father, in which the father dies.
The scene switches to a news program debate where 4 people debate if ghosts exist or not. Among them is a young app developer Kayal who claims she has created an app to converse with spirits. A live demo goes awry. Then one of the debaters speaks about a tiny mummy made by an Egyptian queen who packed all of her kingdom's negative energies in it. Apparently, the mummy can raise negative energy on certain days and is currently located somewhere in Chennai.
As the story continues, we meet Nalan, a restaurant owner who is preparing to ask Kayal's brother for her hand in marriage. Her brother, a police officer, insults him and wants his sister to marry a fashion designer, Aravind, who is financially better off. Nalan returns to his restaurant irritated. We see a customer forgot a small sarcophagus of a Mummy. It is kept on a shelf for the customer to pick up.
Since then, strange things have been happening in the kitchen. The kitchen lights mysteriously turn on, clean utensils are found dirty etc. We see a sweet dish appearing mysteriously in the fridge. The employees sample it and finds it to have a divine taste. Everyone believes Nalan had created it secretly and praise him for the wonderful dish, but Nalan is confused as he did not make it. Throughout the movie, we see this sweet dish mysteriously appearing at multiple scenes.
Nalan meets a man Veera, who hands him the papers of ownership for his restaurant. The man praises Nalan for his hardwork and mentions he deserves it.
Nalan who lives in a small apartment above the restaurant hears a lady crying downstairs at night. He goes down to investigate but doesn't find anyone. He observes the presence of a spirit. Suddenly he gets a phone call, and Veera is on the other line. Veera says he is very hungry and wants something to be delivered to his place. Nalan prepares a meal and delivers it himself. We then see Veera alone in the house with a ghost, getting killed.
Kayal's brother, Prem, is the investigative officer assigned to the case. He suspects Nalan, since he was the one who delivered food to Veera's house. Nalan is summoned for interrogation and claims he is innocent. Aravind comes to pay his respects to Veera, mentioning Veera is an old friend.
Prem takes his Aravind-Kayal wedding preparations to the next level, which irritates Kayal. She wants Nalan to talk to Aravind about their relationship. Seeing Nalan disturbed, his friends decide to spend the evening drinking at his apartment. Nalan goes to talk to Aravind. His friends are attacked by the spirit and injured grievously. Nalan saves them and admits them to a hospital. We then learn that Aravind was killed and Prem's primary suspect is once again Nalan. Kayal confronts Nalan who confesses that he witnessed a spirit murdering Aravind. Kayal and Nalan decide to investigate the spirit with the help of Kayal's app.
The duo speak to a librarian who gives a brilliant idea: investigate the previous owner of the restaurant. Nalan and Kayal find out that it belonged to Mitra, was running a sweet shop along with her Mother. They find out that the mother daughter duo lived in an apartment and try to visit them. They are stopped by security and the apartment secretary bluntly mentions that they do not live there anymore. The daughter was killed in a gas leak explosion at the sweet store and the mother became insane and left soon after.
The security becomes agitated when shown a picture of Aravind. Nalan secretly breaks into Mitra's apartment at night and finds a picture of him that Mitra had drawn. He is shocked. The secretary and the security manage to catch Nalan, but the security is killed in an elevator accident.
A flashback opens. Mitra is shown to be a gifted cook and the mother daughter duo runs the sweet shop, where their specialty is the sweet that was found by Nalan in his fridge. Mitra once travelling in an Autorickshaw stumbles upon Nalan playing cricket. She pencil sketches him in her book out of curiosity. Nalan, who is the batsman, strikes the ball hard and it hits Mitra on her head. Though her life is saved, she develops post traumatic stress related amnesia, rendering her unable to generate new memories. In due course of time, her mother tries very hard to give her a normal life. However Mitra's inability to form new memories are taken advantage of by the watchman who repeatedly rapes her on the lift everyday. Since Mitra is not able to store the incident on her memory, she undergoes the pain each and every day inadvertently. However one day this heinous act is caught by the apartment secretary who thrashes the security. On an evening of celebration, the secretary, his friend Veera (Mitra's maternal uncle), Veera's friend Aravind and the security drug her and rape her. When Mitra's mother finds out, the gang kills her as well. They take Mitra's body and arrange an accident at the sweet shop that supposedly kills her. They hack the mothers body and bury her in a quarry owned by Veera.
The presence of the Mummy raises the spirits of Mitra and her mother, and they take revenge. This explains the deaths of Veera, Aravind and the security.
The apartment secretary tries to escape the spirits with the help of a ghost buster, who is ultimately proved to be useless. With the last of the perpetrators eliminated, the spirit of Mitra and her mother unite, leaving Nalan for good.
