Faisal, best known for his films such as "Do Dooni Chaar" and "Ishaqzaade", said he was unsure about the direction of the story until he came across the sad state of undertrials in India.
"So much has been sacrificed to achieve our freedom. But it's ironic that the freedom of the citizens is taken for granted because of the complex judicial system. People have literally fallen into a black hole because we don't have enough judges and courts," Faisal told PTI in an exclusive interview.
"What primarily drove me to write this story was how we take our freedom for granted and in the trailer there is a dialogue where the character says, 'What has happened to us can happen to you as well. Keep your freedom safe.'"
Faisal said he later saw a documentary on the band The Flying Souls, where they are seen performing a song called "Freedom" for jail inmates.
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The movie, whose trailer came out yesterday, will release on August 25.
The Yash Raj Films project will launch two newcomers -- Aadar Jain and Anya Singh.
It is the second time that Faisal is working with newcomers after "Ishaqzaade" in 2012, which launched Arjun Kapoor opposite a relatively new Parineeti Chopra.
The director said not just Jain, who is the grandson of Raj Kapoor, and YRF find Anya, other five actors are also new.
"Both Adi (Aditya Chopra) and I felt it should have newcomers and they had to be cast carefully. It was a rigorous process. We shortlisted many people and put them through workshops to finally arrive on these seven, who are not only good actors but also have strong individual personalities," he said.
"If actors are excited about the story and surrender themselves to the vision of the story and the director, then it does not matter whether they are new or established.