Narasimhapuram

Siri (Siri Hanumanth of Big Boss Season 5 fame) takes care of Nanda who is a mentally challenged man and tries to get him treated. Nanda and Siri share a dark past which resulted in Nanda losing his sanity. Their past life reveals some cruel acts of people that Nanda has to avenge, but his current situation makes them both helpless. What would Nanda and Siri do in such circumstances?