Based on a life of the Indian woman boxer 'MC Mary Kom', a five-time World Amateur Boxing champion, and the only woman boxer to have won a medal in each of the six world championships. An incident in life of Mary urges her to learn self-defense, a hand based combat. This triggers her initial training, her immense dedication, her will and passion while struggling to balance her life at home, even additional sacrifices to make ends meet, all in the context of the poverty that was constant in her early life. she gets her first unsanctioned fight with immense odds in her face, only to win some money for her family. The story shows how the country writes her off and the pressure to quit from the sport. Only to pave her comebacks and wins accolades, along with taking of her family.