The official trailer of the Swara Bhaskar starrer film 'Nil Battey Sannata' has been released. The film, also featuring Pankaj Tripathi and Ratna Pathak Shah, has been directed by Ashwini Iyer Tiwari. It revolves around the struggles of a woman to get her teenage daughter educated. Produced by Anand L Rai, the film is scheduled to release on April 22.