THE SKY IS PINK is the story of a family facing a crisis over a period of nearly two decades. Niren Chaudhary (Farhan Akhtar) from Chandni Chowk marries Aditi Chaudhary (Priyanka Chopra), a South Delhi girl and also his childhood love, in 1986. They have a son, Ishaan (Rohit Saraf) after a few years. Aditi also gives birth to a daughter, Tanya, but she passes away in 6 months. Thatâ€™s because both Aditi and Niren have a rare faulty gene. They again try for a baby and on March 27, 1996, Aisha (Zaira Wasim) is born.
Sadly, just like Tanya, Aisha too gets affected due to rare faulty genes of her parents and develops a condition called Severe Combined Immunodeficiency (SCID), an immune deficiency order. They move to London for her treatment and even manage to raise double the funds needed for her treatment.
At the age of 6 months, Aisha gets a bone narrow transplant but as a side effect of this treatment, she develops a serious illness of the lungs called pulmonary fibrosis. This condition comes to the fore when Aisha is 13, at a time when the Chaudharys were hoping all her problems are history and sheâ€™ll lead a normal life. Moreover, the doctors make it clear that she wonâ€™t survive for more than 5 years. What happens next forms the rest of the film.