Parmanu - The Story of Pokhran is based on the nuclear bomb test explosions conducted by the Indian Army at Pokhran in 1998. The film tells the story about a group of unsung heroes who are led by a bureaucrat who has been assigned to experiment before India is declared a nuclear state. To orchestrate India's biggest covert operation and how it went about to succeed in its mission while tricking the American intelligence agencies forms the remaining part of this engrossing story.