The film is based on the book, "Rajpath Se Lok Path Par", an autobiography of erstwhile Maharani of Gwalior Rajmata Vijaya Raje Scindia, who also served as a Member of Parliament multiple times.
"I got an invitation for this on my phone and she asked me to come here. She is the governor of Goa but a great writer too. To honour that, I have come here. Thank you, all. I am privileged to be here," Bachchan told reporters.
The movie features Hema in the role of Vijaya Raje Scindia alongside Vinod Khanna.
Directed by Gul Bahar Singh, the film was completed and screened in 2008, but its theatrical release was put on hold.
It is set to release in April.