Deepika Padukone starrer Chhapaak is out in theatres today. The film is based on the story of acid attack survivor Laxmi Agarwal. NDTV's Rohit Khilnani spoke to Deepika about her interaction with Laxmi and asked her what is it that keeps them going. Deepika also said that she knew she was doing Chhapaak a few minutes into the narration.