Stalker.

Arvind is a doting father to 16 year old Anu. One day Anu starts receiving text messages from unknown nos. She confronts her friends but they deny it. She finds herself stalked where ever she goes. She can't divulge this to anyone as the stalker threatens to kill her parents if she does so. Caught in this traumatic situation, she becomes a recluse and a mental wreck. Her parents are unable to fathom what is happening with her. How Anu and the family get out of the situation forms the crux of the film.