[2] The film stars Vikrant Massey, Radhika Apte, Prachi Desai, Rohit Roy and Harbanddana Kaur.

[3][4] The story, set in Mussoorie, follows a police officer and forensic specialist who are on the trail together to find a serial killer.

In Dehradun, Johnny Khanna, a forensic specialist, is called to a crime scene where a wife has been murdered and the husband is in cardiac distress.

In Mussoorie, a schoolgirl walks into a church and sees a group of children singing a birthday song to a girl named Jennifer.

Aditi, the daughter of an MLA is kidnapped at her birthday party, and after finding a blood sample, Johnny believes that the killer is a male between the ages of 10 and 12 because of his footprint.

Aanya has been undergoing counselling by psychologist, Dr. Ranjana, to overcome the trauma of loosing her mother and twin sister.

Another girl, Bindiya Pandit goes missing and Aanya is shown pushing a cart with Aditi's dead body.

Megha asks Ranjana to extract information from Rohan and he confesses to hearing a young girl's voice inside his head to commit the murders.

A news report then shows footage of Aanya pushing a cart with Bindiya's dead body, framing her as the killer.

He admits to finding Bindiya's body and comes to the conclusion is in fact an adult, who has been manipulating Rohan and Aanya to commit the murders.

Johnny had discovered a derelict house containing Bindiya's DNA, and believes that killer will only kill her after 3 days, which will be her birthday.

Megha's theory is proven to be correct, when similar cases of girls reported missing occurred in Rishikesh, 5 years earlier.

Johnny's mentor, Dr. Solanki suggests that they should do DNA phenotyping, to find out the age and appearance of the killer.