Nishi dak an old folk story originated from east india. In this story it said that when you are alone while traveling there will be a familiar voice calling you from behind but once you turn around that's the end your fate. This story told by people who survived but is the ghost that simple.
Leo a normal kid with a happy family but when he was 17 years old his mother died by suicide while his father died in accident in the same year which is suspicious. He started his investigating about his parents death but the truth changed the path of his life.