A family movie which shows the twists and turns and the highs and lows which the Indian families go through in making their family a successful one, But it also shows what they have to put to keep it united and make them live happily.
Estranged brothers Rahul played by (Fawad Afzal Khan) and Arjun Kapoor which is done by (Sidharth Malhotra) and are requested to return to their childhood home in Coonoor when their 90-year-old grandfather Amarjeet which is being played by (Rishi Kapoor) suddenly suffers a heart attack. Their parents, Harsh and Sunita Kapoor (Rajat Kapoor and Ratna Pathak) also reside at that place. Rahul is a writer, who personifies the image of successful young man who appears to be the most mature person in this joint family. Arjun struggles to find a job where he can stick with and resorts and by working on a website and doing part-time job as a bartender to make his regular and required meets and writes in the left-over time. While the brothers struggle to get along with their parents themselves are too troubled with their own marriage.
Harsh is not satisfied with Sunita’s wish to open a catering business and Sunita brings up Harsh’s old affair which makes an existing problem more complicated in their relationship until now.
The brothers visit their grandfather Amarjeet, who is now placed in an ICU and is counting his last wishes. To receive treatment, he needs to be sent to Bengaluru for his operation. When the issue of money arises, Harsh suggests to borrow money from his brother, which irks Sunita. When Arjun intervenes, Rahul fall-backs his presence and they fight on this topic at the hospital. While living under one roof, family secrets starting to unravel and misunderstandings are taking places and on the verge of turning into big tragedy.
Amarjeet however does not want to go to Bengaluru and while having just two wishes. His first wish is to be buried in an army burial ground with his old friends. His second wish is to take a family photo which he wants to be titled as “Kapoor & Sons, Since 1921”.
Arjun is reunited with his old friend Wasim. Rahul visits an old property which he wants to purchase to use as an art studio. The property happens to belong to Tia which is being inherited from her late parents. Tia reveals to Arjun that she lost her parents at a ver early age of thirteen and since then she lives alone. Later Tia admits her love for Arjun but regrets in involving herself with Rahul unnecessarily.
Arjun invites Tia and discovers that she and Rahul already knew each other. The party goes on well but problems arise when the family members find out that Harsh has invited Anu, whom he had an affair with so much time before. Sunita acts out over this and a fight ensues between her and Harsh causing the party to crash-end. Amarjeet brings the family together and takes a family photo of the four of them, temporarily bringing them together. Harsh gives his support to Sunita to start her business and apologises for losing all the money they have as traditionally inherited.
The Kapoor family fulfill one of Amarjeet’s last wishes to take a family photo, however secrets gets revealed and confrontations take place in front of Amarjeet. Arjun finds out Rahul has been reading his script, enraged he beats up Rahul and confronts him of stealing his first story. Harsh dies in a car accident. Rahul comes out of the closet with Arjun and both of them leave for different places respectively.
After four months, the duo receive a video message from Amarjeet, in which he requests them to come back as he is feeling alone. Amarjeet again wishes to take a family photo where they place a cutout of Harsh in his memory.