Aisha is the narrator of the story of her parents, Aditi (Moose) and Niren (Panda) after she is no more. Aditi is from suburbans of South Delhi, while Niren belongs to a middle class family. They fall in love and are active in sex life being older.
They both get married and Aditi gives birth to first child Tanya, who lives for few months and dies due to severe combined immuno deficiency (SCID) syndrome. She fell ill so frequently that Aditi brought it into notice of Niren, who just ignored her. This became the reason she couldn't get proper treatment. However, he blamed himself for death of Tanya. Aditi consoled.
They later had Ishaan and Aisha. Aisha was in the same condition as of Tanya. After no help from doctors of Delhi, they turned towards London, where she could get a bonemarrow transplant.
Niren starts earning and asks for crowdfunding with help of a radio station.They receive pretty good donations. Aisha had to be under observation, so Aditi stays back in London while Niren returns back to his family and Ishaan. Aditi is quite cautious about the infections that may be catched by Aisha so cleans up everything.
Ishaan misses his mother. The relationship of both of her parents is in danger, since Aditi has no time for anyone else other than Aisha. Since, Aisha has to be taken for scheduled visits to a doctor, the family shifts in London, till she gets well. Niren expands his business there.
Aisha recovers and they decide to move back to India. Aisha is diagnosed, and pulmonary fibrosis, side effect of chemo is observed in her. Aditi tries to fulfill all her dreams in the smaller time of Aisha's life left. She gets him a pet, aquarium, writes a book.
Taking care of her, Aditi stresses and is in a psychotic break down. And is sent to hospital for treatment. Meanwhile, Aisha promises that she won't leaves until her mother comes back home.
After Aisha dies, the relationship of both is worsened. Aditi has huge stresses of Aisha's death. Niren brings out a video made by Aisha for her parents. Niren moves to London, while Aditi stays back in India, along with the memories of her daughter.
Later she moves to London and they are happy again.