In 2001, Anupama Banerjee arrives in London, England with her husband, Ajay Abhay Kumar, and reveals that she is filing a criminal case against her mother, Shakuntala Devi.

The film moves to Shakuntala Devi's childhood in Bangalore in the 1930s where her family discovers her incredible talent for quickly solving complex mathematical problems in her head.

Her father, Bishaw, decides to use Shakuntala's talent and have her do "math shows," where she would entertain people with her problem solving prowess.

Shakuntala continues to do math shows and earn for the family as she grows up, but blames her father for not letting her live a normal childhood.

In 1954, she leaves for London after a violent altercation with her boyfriend, Dhiraj, after she learns that he had been pretending to love her even though he had a marriage fixed and even the invites printed out.

In London, Shakuntala lives with Tarabai in her home with three other Indian men but struggles to find opportunities for her shows.

However, she eventually manages to impress Javier, a Spanish mathematician, when she shows off her skills at the Royal Mathematical Society in London.

Shakuntala continues to amaze people, and even makes it into The Guinness Book of Records, but she worries about being an uncaring mother.

Due to the COVID-19 pandemic, the film was not released theatrically and streamed on Amazon Prime Video worldwide on 31 July 2020.

[17] Saibal Chatterjee of NDTV opined "the numbers add up nicely with a feisty Vidya Balan", giving the movie three out of five stars.

[18] Mike McCahill of The Guardian gave it three stars out of five and said, "The movie finds funny ways of dramatising the process whereby one generation of women squares its frustrations with another – but it adds up to spirited, intelligent, authentically feminist entertainment.