While driving through a mountainous region of India, investigators, Aryan Srivastav and Divya, come across a woman who is lying unconscious by the roadside. They find out that her name is Natasha and take her to the house of a woman named Nalini Sen. It is here they find out Natasha is not exactly who she claims to be, but may be a woman who is concealing her identity to cover up for the murder of Professor Chandramohan Xeno, whose body has been recovered by the police. Watch how the duo tries to unravel this mystery and find out who exactly Natasha is; whose voice only she can hear; and why she killed Professor Xeno.